WO2016101126A1 - 无线通信的方法和通信设备 - Google Patents

无线通信的方法和通信设备 Download PDF

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Publication number
WO2016101126A1
WO2016101126A1 PCT/CN2014/094605 CN2014094605W WO2016101126A1 WO 2016101126 A1 WO2016101126 A1 WO 2016101126A1 CN 2014094605 W CN2014094605 W CN 2014094605W WO 2016101126 A1 WO2016101126 A1 WO 2016101126A1
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Prior art keywords
channel
coded bits
energy
data
determining
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PCT/CN2014/094605
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English (en)
French (fr)
Inventor
王璐
张黔
刘亚林
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华为技术有限公司
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Priority to PCT/CN2014/094605 priority Critical patent/WO2016101126A1/zh
Publication of WO2016101126A1 publication Critical patent/WO2016101126A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Definitions

  • Embodiments of the present invention relate to the field of wireless communications, and, more particularly, to a method and a communication device for wireless communication.
  • Wireless networks use wireless technology to transmit data, voice, and video signals over the air.
  • wireless networks free individuals from their desks, enabling them to access information anytime, anywhere, and improve employee productivity. Due to the broadcast characteristics of wireless signals, wireless networks cannot tolerate parallel transmission of adjacent nodes on overlapping channels. Otherwise, the two wireless signals transmitted in parallel are superimposed in the air, causing some interference to each other's transmission, which eventually leads to transmission failure.
  • Wireless Local Area Network (English: Wireless Local Area Network, WLAN for short) has been widely used. Wireless network resources are also becoming increasingly tense, and WLAN systems cannot guarantee that each node will be assigned a proprietary, non-overlapping channel for data transmission. Therefore, overlapping some channels has become an inevitable development trend of WLAN.
  • Embodiments of the present invention provide a method and a communication device for wireless communication, which can improve system throughput.
  • an embodiment of the present invention provides a method for wireless communication, including:
  • the deinterleaved coded bits are decoded.
  • determining an overlap ratio of the channel according to the energy of the received signal in the channel including:
  • the overlap ratio of the channels is determined.
  • the deinterleaved coded bits are decoded, including:
  • the coded bits after interference cancellation are decoded.
  • the deinterleaved coded bits are decoded, including:
  • Determining the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability;
  • the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the de-interleaved coded bits are decoded based on the weights, including:
  • the code distance d of the estimated value is determined according to the following formula
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the weight w(i) is determined according to the following formula
  • the method before determining the overlapping ratio of the channels according to the energy of the received signal in the channel, the method further includes:
  • the overlap ratio of the channels is determined according to the energy of the received signal in the channel.
  • an embodiment of the present invention provides a method for wireless communication, including:
  • the indication information is used to indicate an adaptive interleaving method used when the channel is specifically overlapped
  • the interleaved bits are modulated to obtain modulated data, and the modulated data is transmitted to the receiving device via the channel.
  • the indication information includes a channel overlap ratio of 1/P
  • the coded bits are adaptively interleaved according to the adaptive interleaving method indicated by the indication information, to obtain conflict randomization.
  • Interleaved bits including:
  • an embodiment of the present invention provides a method for wireless communication, including:
  • the coded bits are adaptively interleaved to obtain conflicting randomized interleaved bits
  • the interleaved bits are modulated to obtain modulated data, and the modulated data is transmitted to the receiving device via the channel.
  • determining an overlapping ratio of the channels according to the energy of the received signal in the channel including:
  • the overlap ratio of the channels is determined.
  • the overlapping ratio is 1/P
  • the coded bits are adaptively interleaved according to the overlapping ratio, to obtain the conflicting randomized interleaving bits, including :
  • the method Before determining the overlap ratio of the channels according to the energy of the received signals in the channel, the method further includes:
  • the overlap ratio of the channels is determined according to the energy of the received signal in the channel.
  • an embodiment of the present invention provides a method for wireless communication, including:
  • the deinterleaved coded bits are decoded.
  • the acquiring the adaptive interleaving information of the modulated data includes:
  • the adaptive interleaving information is obtained from the preamble of the modulated data.
  • the deinterleaved coded bits are decoded, including:
  • the coded bits after interference cancellation are decoded.
  • the deinterleaved coded bits are decoded, including:
  • Determining the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability;
  • the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the decoding the decoded coded bits based on the weights includes:
  • the code distance d of the estimated value is determined according to the following formula
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the weight w(i) is determined according to the following formula
  • an embodiment of the present invention provides a communications device, including:
  • a determining unit configured to determine an overlap ratio of the channel according to the energy of the received signal in the channel
  • a sending unit configured to send, to the sending end device, the indication information, where the indication information is used to indicate an adaptive interleaving method used by the sending end device to send data when the ratio is overlapped;
  • a receiving unit configured to receive data on the channel from the sending end device
  • a demodulation unit configured to demodulate the data to obtain demodulated data
  • a deinterleaving unit configured to deinterleave the demodulated data according to an adaptive interleaving method to obtain coded bits after deinterleaving
  • a decoding unit configured to decode the deinterleaved coded bits.
  • the determining unit is specifically configured to:
  • the overlap ratio of the channels is determined.
  • the decoding unit is specifically configured to:
  • the coded bits after interference cancellation are decoded.
  • the decoding unit is specifically configured to:
  • Determining the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability;
  • the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the decoding unit is specifically configured to:
  • the code distance d of the estimated value is determined according to the following formula
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the decoding unit is specifically configured to:
  • the determining unit is further configured to:
  • the overlap ratio of the channels is determined according to the energy of the received signal in the channel.
  • an embodiment of the present invention provides a communications device, including:
  • a receiving unit configured to receive indication information from the receiving end device, where the indication information is used to indicate an adaptive interleaving method used when the channel is specifically overlapped;
  • An interleaving unit configured to perform adaptive interleaving of the coded bits according to the adaptive interleaving method indicated by the indication information, to obtain interleaved bits that are collision-randomized;
  • a modulating unit configured to modulate the interleaved bits to obtain modulated data
  • a sending unit configured to send the modulated data to the receiving end device via the channel.
  • the indication information includes a channel overlap ratio of 1/P
  • the interleaving unit is specifically configured to:
  • an embodiment of the present invention provides a communications device, including:
  • a determining unit configured to determine an overlap ratio of the channel according to the energy of the received signal in the channel
  • An interleaving unit configured to perform adaptive interleaving of the coded bits according to an overlapping ratio, to obtain an interleaved bit that is conflict-randomized;
  • a modulating unit configured to modulate the interleaved bits to obtain modulated data
  • a sending unit configured to send the modulated data to the receiving end device via the channel.
  • the determining unit is specifically configured to:
  • the overlap ratio of the channels is determined.
  • the overlapping ratio is 1/P, and the interleaving unit is specifically used,
  • the determining unit is further configured to:
  • the overlap ratio of the channels is determined according to the energy of the received signal in the channel.
  • an embodiment of the present invention provides a communications device, including:
  • a receiving unit configured to receive modulation data from the sending end device
  • a demodulation unit configured to demodulate the modulated data to obtain demodulated data
  • An acquiring unit configured to acquire adaptive interleaving information of the modulated data, where the adaptive interleaving information corresponds to an overlapping ratio of the channels;
  • a deinterleaving unit configured to deinterleave the demodulated data according to the adaptive interleaving information to obtain decoded coded bits
  • a decoding unit configured to decode the deinterleaved coded bits.
  • the acquiring unit is specifically configured to obtain the adaptive interleaving information from the preamble of the modulated data.
  • the coded bits after interference cancellation are decoded.
  • the decoding unit is specifically configured to:
  • Determining the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability;
  • the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the decoding unit is specifically configured to:
  • the code distance d of the estimated value is determined according to the following formula
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the decoding unit is specifically configured to:
  • the receiving end device before performing data transmission, the receiving end device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • FIG. 1 is a schematic structural diagram of a communication system to which an embodiment of the present invention is applicable.
  • FIG. 2 is a schematic flow chart of a method of wireless communication according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an energy spectrum of an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of interference cancellation according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention.
  • FIG. 7 is a schematic diagram of adaptive interleaving according to an embodiment of the present invention.
  • FIG. 8 is a schematic illustration of system throughput in accordance with an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention.
  • FIG. 11 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention.
  • Figure 12 is a schematic block diagram of a communication device in accordance with one embodiment of the present invention.
  • Figure 13 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • Figure 14 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • Figure 15 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • Figure 16 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • Figure 17 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • Figure 18 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • Figure 19 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the access point AP can convert the wired network into a wireless network and provide the STA for the station.
  • the STA can be a user equipment (English: User Equipment, referred to as "UE"), a terminal (English: Terminal), a mobile station (English: Mobile Station, referred to as "MS"), a mobile terminal (English: Mobile Terminal), etc. .
  • UE User Equipment
  • MS Mobile Station
  • the STA may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, or the like.
  • the STA can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • FIG. 1 is a schematic structural diagram of a communication system to which an embodiment of the present invention is applicable.
  • the communication system in FIG. 1 is a WLAN system, and an AP 102 with a coverage of 101 is taken as an example for description. It should be understood that the embodiment of the present invention does not limit the number of APs in the WLAN system.
  • the STA (103a, 103b, 103c) falls within the coverage 101 of the AP 102 and accesses the AP 102 for communication. If the system allocates non-overlapping channels for communication between the STAs (103a, 103b, 103c) and the AP 102, the utilization of the wireless communication resources is low, and the wireless communication resources of the entire WLAN system are tight.
  • Embodiments of the present invention provide a method and a communication device for wireless communication, which can improve system throughput. It should be understood that the foregoing communication system is only an example, and the scope of protection of the embodiments of the present invention is not limited thereto.
  • the embodiments of the present invention can be applied to a next-generation Wi-Fi system, such as the HEW system of the IEEE 802.11ax standard, and can also be applied to other wireless local area network systems, and can also be applied to a cellular network.
  • FIG. 2 is a schematic flow chart of a method of wireless communication according to an embodiment of the present invention.
  • the method of Figure 2 can be performed by the receiving device in the current communication process.
  • a WLAN system may divide a wireless communication resource into a plurality of channels that partially overlap with channels of adjacent frequency bands.
  • the channels currently available to the communication device may not overlap with other channels or have different overlapping ratios with other channels.
  • the receiving device when preparing to communicate with the transmitting device, the receiving device first detects the energy of the received signal in the current channel. Then, based on the energy of the received signal, the overlap ratio of the current channel is determined.
  • the indication information includes the overlapping ratio of the channels.
  • the receiving device and the sending device The end device can pre-agreed the adaptive interleaving method used when each channel overlap ratio.
  • the receiving device directly transmits the overlap ratio to the transmitting device.
  • the transmitting device learns the overlapping ratio, the coding bit is interleaved according to the adaptive interleaving method corresponding to the overlapping ratio, so that the collision caused by the overlapping portion of the channel can be randomized, thereby ensuring that the receiving device can successfully decode the received data. .
  • the indication information may also directly carry the index number of the adaptive interleaving method.
  • the receiving end device and the transmitting end device pre-agreed the adaptive interleaving method used when each channel overlap ratio, and assign an index number to each adaptive interleaving method.
  • the receiving end device can directly send the index number of the corresponding adaptive interleaving method to the sending end device according to the overlapping ratio of the current channel.
  • the transmitting end device adaptively interleaves the coded bits according to the index number, so that the collision caused by the overlapping portion of the channel can be randomized, thereby ensuring that the receiving end device can successfully decode the received data correctly.
  • the scope of protection of the embodiments of the present invention is not limited thereto, and the implementation of other equivalent transformations should fall within the protection scope of the embodiments of the present invention.
  • the received data is demodulated to obtain demodulated data.
  • the demodulated data is deinterleaved to obtain deinterleaved coded bits.
  • the coded bits deinterleaved by the foregoing method are decoded. Since the collision caused by the overlapping portion of the channel is randomized, the receiving end can successfully decode the deinterleaved coded bits.
  • the receiving end device before performing data transmission, the receiving end device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the energy spectrum of the channel may be determined according to the energy of the received signal in the channel. Then, based on the energy spectrum, the overlapping ratio of the channels is determined.
  • FIG. 3 is a schematic diagram of an energy spectrum of an embodiment of the present invention. Energy at different channel overlap ratios The spectra have different distributions. Figure 3 shows the energy spectra for the four channel overlap ratios, 1/4, 1/2, 3/4, and full overlap, respectively. It should be understood that these four examples are only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.
  • media access control (English: Media Access Control, MAC for short) detection and access module can be set on the receiving device side.
  • the module uses time domain detection and frequency domain two-step analysis to determine the current channel overlap ratio in real time.
  • the receiving device may perform channel energy detection to determine the energy of the received signal in the current channel.
  • the frequency domain analysis is performed, and the energy and frequency of the received signal are respectively normalized to obtain an energy spectrum.
  • the energy spectrum of the current channel is compared with the four energy spectra in FIG. 3, and the overlap ratio corresponding to the closest energy spectrum is determined as the overlap ratio of the current channel.
  • interference of the pilot signals with the coded bits may be first removed according to the pilot signals. Then, the coded bits after interference cancellation are decoded.
  • a pilot assist decoding module may be provided on the receiving device side to implement subsequent decoding using known pilot signals.
  • the receiving end device may estimate, according to the overlapping ratio of the channels, which of the data subcarriers transmitted by the pilot subcarrier in the interference signal overlaps, and then cancel the interference on the known pilot subcarrier to obtain the data subcarrier. On its own data. Finally, subsequent equalization and decoding are performed.
  • 4 is a schematic diagram of interference cancellation according to an embodiment of the present invention. As shown in FIG. 4, transmission 2 is data required by the receiving device, and transmission 1 is data of other users on the parallel channel. Pilot subcarrier at transmission 1 And the data subcarrier of transmission 2 The position of the overlap, the received data y can be expressed as formula (1):
  • h t represents the channel impulse response vector of the channel on which transmission 1 is located
  • n t represents the white noise representing the channel on which transmission 1 is located
  • h i represents the impulse response vector of the channel on which transmission 2 is located
  • n i represents the white noise representing the channel on which transmission 2 is located.
  • the reliability of the coded bits corresponding to the overlapping portion of the channel may be determined to be low reliability, and the reliability of the remaining coded bits is high reliability. Then, the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the receiving device can assign different weights to different data, so as to maximize the use of reliable data for decoding, and extract useful information from unreliable data. In this way, the embodiment of the present invention can further improve the decoding success rate.
  • the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability, which is relatively limited.
  • the specific weight size is not limited in the embodiment of the present invention.
  • the code distance d of the estimated value is determined according to the following formula (3):
  • each estimated value of the code is compared, and the estimated value in which the code distance is the smallest is taken as the final decoding result.
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the weight w(i) is determined according to the following formula (4):
  • the energy of the received signal in the channel may be determined by time domain detection before determining the overlapping ratio of the channels according to the energy of the received signal in the channel. If the energy of the received signal is greater than a preset threshold, it is determined that the channel is busy. In this case, when the channel overlap ratio is determined according to the energy of the received signal in the channel, when the channel is busy, the overlap ratio of the channel is determined according to the energy of the received signal in the channel.
  • FIG. 5 is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention. Embodiments of the present invention will be described in detail below in conjunction with the specific examples shown in FIG. It should be noted that these examples are only for The scope of the present invention is not limited by the scope of the embodiments of the present invention.
  • step 502. Determine whether the channel is idle. If the channel is idle, proceed to step 503, otherwise proceed to step 504.
  • the MAC detection and access module of the receiving end device performs time domain detection first, determines the busy condition in the current channel, and then determines whether to access the channel for data transmission.
  • the energy of the received signal in the current channel may be determined by time domain detection. If the energy of the received signal is greater than a preset threshold, it is determined that the current channel is busy, and the channel is idle.
  • the receiving device when it is determined that the channel is idle, the receiving device first performs backoff, and then performs data transmission, that is, receives data from the transmitting device.
  • the receiving device can perform frequency domain analysis on the time domain detection result (the energy of the received signal in the channel), and determine the current channel overlap ratio 1/P in real time to determine whether to access the channel for parallel transmission.
  • the time domain detection result the energy of the received signal in the channel
  • the current channel overlap ratio 1/P the current channel overlap ratio 1/P in real time to determine whether to access the channel for parallel transmission.
  • step 505. Determine whether the overlap ratio 1/P is less than 3/4. If not, go to step 507, otherwise, go to step 506.
  • threshold 3/4 For example, set the threshold 3/4 to determine if 1/P is less than 3/4. When 1/P ⁇ 3/4, it can be considered that the data transmission can be performed, and vice versa, the current data transmission cannot be performed.
  • the receiving end device sends a second backoff feedback to the sending end device, and notifies the sending end device to perform backoff.
  • the receiving device can go to step 501 to perform time domain detection again to determine the energy of the received signal in the current channel.
  • the receiving end device when determining 1/P ⁇ 3/4, sends the adaptive interlace backoff feedback to the sending end device (that is, sends the indication information to the sending end device), notifies the sending end device to perform backoff, and uses the corresponding self.
  • the adaptive interleaving method adaptively interleaves the data to be transmitted.
  • the receiving device extracts control information from the preamble portion of the received data, and determines adaptive interleaving information of the data.
  • the receiving device deinterleaves the received data according to the control information extracted in step 509.
  • the receiving end device uses the known pilot signal to assist decoding, and eliminates the interference on the known pilot subcarriers to obtain its own data on the data subcarrier.
  • the coded bits corresponding to the overlapping portion of the channel are given a small weight, the remaining coded bits are given a large weight, and the deinterleaved coded bits are decoded based on the weight.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data.
  • FIG. 6 is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention.
  • the method of FIG. 6 can be performed by the transmitting device in the current communication process.
  • the indication information includes the overlapping ratio of the channels.
  • the receiving end device and the transmitting end device can pre-agreed the adaptive interleaving method used when the channel overlap ratio is used.
  • the receiving device after determining the channel overlap ratio, the receiving device directly transmits the overlap ratio to the transmitting device.
  • the indication information may also directly carry the index number of the adaptive interleaving method.
  • the receiving end device and the transmitting end device pre-agreed the adaptive interleaving method used when each channel overlap ratio, and assign an index number to each adaptive interleaving method.
  • the receiving end device can directly send the index number of the corresponding adaptive interleaving method to the sending end device according to the overlapping ratio of the current channel.
  • the indication information includes an overlap ratio.
  • the adaptive interleaving method corresponding to the stack ratio interleaves the coded bits, so that the collision caused by the overlapping parts of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data.
  • the indication information includes an index number of the adaptive interleaving method, and the transmitting end device adaptively interleaves the coded bits according to the index number, so that the conflict caused by the overlapping part of the channel can be randomized, thereby ensuring that the receiving end device can successfully receive the interference.
  • the data is correctly decoded.
  • the receiving end device before performing data transmission, the receiving end device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the indication information includes a channel overlap ratio of 1/P.
  • FIG. 7 is a schematic diagram of adaptive interleaving according to an embodiment of the present invention.
  • Figure 7 shows an adaptive interleaving method used when the channels are 1/4 overlapped.
  • the coded bits are divided into four groups G 1 , G 2 , G 3 , G 4 .
  • the coded bits (13, 14, 15, 16 ) of the G 4 group correspond to overlapping portions of the channel, that is, collision bits.
  • the coded bits (13, 14, 15, 16 ) of the G 4 group are evenly spread into all coded bits by the packet interleaver, and the collision is randomized to obtain the bits after the interleaving (1, 9, 5, 13, 2, 10,6,14,3,11,7,15,4,12,8,16). This ensures that at least one part of each of the block coded bits is a non-collision bit after the deinterleaving of the receiving device, and the received data can be successfully decoded by using the redundancy of the code.
  • the adaptive interleaving method is similar under other channel overlap ratios, and is not described here to avoid repetition.
  • the transmitting end device may first send the adaptive frame notification to the surrounding communication device to protect the ongoing data transmission in the current system.
  • FIG. 8 is a schematic illustration of system throughput in accordance with an embodiment of the present invention.
  • Piros represents the system throughput corresponding to the embodiment of the present invention
  • ASN corresponds to the communication method of Ref.2
  • Remap corresponds to the communication method of Ref.1.
  • the communication method of the embodiment of the present invention has a high system throughput at different SINRs. Compared with several existing communication methods, in most cases, the system throughput can be significantly improved.
  • FIG. 9 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention.
  • the method of FIG. 9 can be performed by the transmitting device in the current communication process.
  • a WLAN system may divide a wireless communication resource into a plurality of channels that partially overlap with channels of adjacent frequency bands.
  • the channels currently available to the communication device may not overlap with other channels or have different overlapping ratios with other channels.
  • the transmitting device when preparing to communicate with the receiving device, the transmitting device first detects the energy of the received signal in the current channel. Then, based on the energy of the received signal, the overlap ratio of the current channel is determined.
  • the coding bit is interleaved according to the adaptive interleaving method corresponding to the overlapping ratio, so that the collision caused by the overlapping portion of the channel can be randomized, thereby ensuring that the receiving device can successfully receive the received data. Decode.
  • the transmitting device before performing data transmission, the transmitting device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the energy spectrum of the channel may be determined according to the energy of the received signal in the channel. Then, based on the energy spectrum, the overlapping ratio of the channels is determined.
  • media access control (English: Media Access Control, MAC for short) detection and access module can be set on the transmitting device side.
  • the module uses time domain detection and frequency domain two-step analysis to determine the current channel overlap ratio in real time.
  • the transmitting device may perform channel energy detection to determine the energy of the received signal in the current channel.
  • the frequency domain analysis is performed, and the energy and frequency of the received signal are respectively normalized to obtain an energy spectrum.
  • the energy spectrum of the current channel is compared with the four energy spectra in FIG. 3, and the overlap ratio corresponding to the closest energy spectrum is determined as the overlap ratio of the current channel.
  • the overlap ratio is 1/P.
  • the coded bits are divided into four groups G 1 , G 2 , G 3 , G 4 .
  • the coded bits (13, 14, 15, 16 ) of the G 4 group correspond to overlapping portions of the channel, that is, collision bits.
  • the coded bits (13, 14, 15, 16 ) of the G 4 group are evenly spread into all coded bits by the packet interleaver, and the collision is randomized to obtain the bits after the interleaving (1, 9, 5, 13, 2, 10,6,14,3,11,7,15,4,12,8,16).
  • the adaptive interleaving method is similar under other channel overlap ratios, and is not described here to avoid repetition.
  • the energy of the received signal in the channel is determined by time domain detection before determining the overlapping ratio of the channels according to the energy of the received signal in the channel. If the energy of the received signal is greater than a preset threshold, it is determined that the channel is busy. When the channel is busy, the overlap ratio of the channels is determined according to the energy of the received signal in the channel.
  • FIG. 10 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention. Embodiments of the present invention will be described in detail below in conjunction with the specific examples shown in FIG. It should be noted that these examples are only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.
  • step 1002. Determine whether the channel is idle. If the channel is idle, proceed to step 1003, otherwise proceed to step 1004.
  • the MAC detection and access module of the sending device first performs time domain detection to determine the busy condition in the current channel, and then determines whether to access the channel for data transmission.
  • the energy of the received signal in the current channel may be determined by time domain detection. If the energy of the received signal is greater than a preset threshold, it is determined that the current channel is busy, and the channel is idle.
  • the receiving end device when it is determined that the channel is idle, the receiving end device first performs backoff, and then performs data transmission, that is, sends data to the receiving end device.
  • the transmitting device can perform frequency domain analysis on the time domain detection result (the energy of the received signal in the channel), and determine the current channel overlap ratio 1/P in real time to determine whether to access the channel for parallel transmission.
  • the time domain detection result the energy of the received signal in the channel
  • determine the current channel overlap ratio 1/P in real time to determine whether to access the channel for parallel transmission.
  • step 1005. Determine whether the overlap ratio 1/P is less than 3/4. If not, proceed to step 1007, otherwise proceed to step 1006.
  • threshold 3/4 For example, set the threshold 3/4 to determine if 1/P is less than 3/4. When 1/P ⁇ 3/4, it can be considered that the data transmission can be performed, and vice versa, the current data transmission cannot be performed.
  • the transmitting device performs secondary backoff, and proceeds to step 1001 to perform time domain detection again to determine the energy of the received signal in the current channel.
  • the transmitting device sends an adaptive frame after the backoff to notify the surrounding communication device to protect the ongoing data transmission in the current system.
  • the transmitting end device adaptively interleaves the coded bits according to the overlapping ratio of the current channel, so that the collision caused by the overlapping portion of the channel can be randomized, thereby ensuring that the receiving end device can successfully decode the received data.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can be formed.
  • the work decodes the received data.
  • FIG. 11 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention.
  • the method of Figure 11 can be performed by the receiving device in the current communication process.
  • the received data is demodulated to obtain demodulated data. Then, based on the adaptive interleaving information, the demodulated data is deinterleaved to obtain decoded coded bits.
  • the coded bits deinterleaved by the foregoing method are decoded. Since the collision caused by the overlapping portion of the channel is randomized, the receiving end can successfully decode the deinterleaved coded bits.
  • the transmitting device before performing data transmission, the transmitting device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the adaptive interleaving information when acquiring adaptive interleaving information of the modulated data, is obtained from a preamble of the modulated data.
  • the transmitting end device sends the adaptive interleaving information to the receiving end device through the preamble field of the data. After receiving the data from the transmitting device, the receiving device acquires adaptive interleaving information from the preamble field.
  • interference of the pilot signal with the coded bits is first removed according to the pilot signal, and then the coded bits after the interference cancellation are decoded.
  • a pilot assist decoding module may be provided on the receiving device side to implement subsequent decoding using known pilot signals.
  • the receiving end device may estimate, according to the overlapping ratio of the channels, which of the data subcarriers transmitted by the pilot subcarrier in the interference signal overlaps, and then cancel the interference on the known pilot subcarrier to obtain the data subcarrier. On its own data. Finally, subsequent equalization and decoding are performed. As shown in FIG. 4, transmission 2 is data required by the receiving device, and transmission 1 is data of other users on the parallel channel. Pilot subcarrier at transmission 1 And the data subcarrier of transmission 2 The position of the overlap, the received data y can be expressed as formula (5):
  • h t represents the channel impulse response vector of the channel on which transmission 1 is located
  • n t represents the white noise representing the channel on which transmission 1 is located
  • h i represents the impulse response vector of the channel on which transmission 2 is located
  • n i represents the white noise representing the channel on which transmission 2 is located.
  • the reliability of the coded bits corresponding to the overlapping portion of the channel may be determined to be low reliability, and the reliability of the remaining coded bits is high reliability. Then, the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the receiving device can assign different weights to different data, so as to maximize the use of reliable data for decoding, and extract useful information from unreliable data. In this way, the embodiment of the present invention can further improve the decoding success rate.
  • the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability, which is relatively limited.
  • the specific weight size is not limited in the embodiment of the present invention.
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the weight w(i) is determined according to the following formula (8),
  • FIG. 12 is a schematic block diagram of a communication device in accordance with one embodiment of the present invention.
  • the communication device shown in FIG. 12 is the receiving device in the communication process.
  • the communication device 120 includes a determining unit 1201, a transmitting unit 1202, a receiving unit 1203, a deinterleaving unit 1204, and a decoding unit 1205.
  • the determining unit 1201 is configured to determine an overlapping ratio of the channels according to the energy of the received signal in the channel.
  • a WLAN system may divide a wireless communication resource into a plurality of channels that partially overlap with channels of adjacent frequency bands.
  • the channels currently available to the communication device may not overlap with other channels or have different overlapping ratios with other channels.
  • the receiving device when preparing to communicate with the transmitting device, the receiving device first detects the energy of the received signal in the current channel. Then, based on the energy of the received signal, the overlap ratio of the current channel is determined.
  • the sending unit 1202 is configured to send, to the sending end device, indication information, where the indication information is used to indicate an adaptive interleaving method used by the sending end device to send data when the ratio is overlapped.
  • the indication information includes the overlapping ratio of the channels.
  • the receiving end device and the transmitting end device can pre-agreed the adaptive interleaving method used when the channel overlap ratio is used.
  • the receiving device directly transmits the overlap ratio to the transmitting device.
  • the transmitting device learns the overlapping ratio, the coding bit is interleaved according to the adaptive interleaving method corresponding to the overlapping ratio, so that the collision caused by the overlapping portion of the channel can be randomized, thereby ensuring that the receiving device can successfully decode the received data. .
  • the indication information may also directly carry the index number of the adaptive interleaving method.
  • the receiving end device and the transmitting end device pre-agreed the adaptive interleaving method used when each channel overlap ratio, and assign an index number to each adaptive interleaving method.
  • the receiving end device can directly send the index number of the corresponding adaptive interleaving method to the sending end device according to the overlapping ratio of the current channel.
  • the transmitting device adaptively interleaves the encoded bits according to the index number, so that The collision caused by the overlapping part of the channel can be randomized, thereby ensuring that the receiving end device can successfully decode the received data correctly.
  • the scope of protection of the embodiments of the present invention is not limited thereto, and the implementation of other equivalent transformations should fall within the protection scope of the embodiments of the present invention.
  • the receiving unit 1203 is configured to receive data from the transmitting end device on the channel.
  • a demodulation unit 1204 configured to demodulate data to obtain demodulated data
  • the deinterleaving unit 1205 is configured to deinterleave the demodulated data according to the adaptive interleaving method to obtain coded bits after deinterleaving.
  • the received data is demodulated to obtain demodulated data.
  • the demodulated data is deinterleaved to obtain deinterleaved coded bits.
  • the decoding unit 1206 is configured to decode the deinterleaved coded bits.
  • the coded bits deinterleaved by the foregoing method are decoded. Since the collision caused by the overlapping portion of the channel is randomized, the receiving end can successfully decode the deinterleaved coded bits.
  • the receiving end device before performing data transmission, the receiving end device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the determining unit 1201 is specifically configured to determine an energy spectrum of the channel according to the energy of the received signal in the channel, and then determine an overlap ratio of the channel according to the energy spectrum.
  • FIG. 3 shows the energy spectra for the four channel overlap ratios, 1/4, 1/2, 3/4, and full overlap, respectively. It should be understood that these four examples are only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.
  • media access control (English: Media Access Control, MAC for short) detection and access module can be set on the receiving device side.
  • the module uses time domain detection and frequency domain two-step analysis to determine the current channel overlap ratio in real time.
  • the receiving device may perform channel energy detection to determine the energy of the received signal in the current channel.
  • the frequency domain analysis is performed, and the energy and frequency of the received signal are respectively normalized to obtain an energy spectrum.
  • the energy spectrum of the current channel is compared with the four energy spectra in FIG. 3, and the overlap ratio corresponding to the closest energy spectrum is determined as the overlap ratio of the current channel.
  • the decoding unit 1206 is specifically configured to: according to the pilot signal, cancel interference of the pilot signal to the coded bit, and then decode the coded bit after the interference is cancelled.
  • a pilot assist decoding module may be provided on the receiving device side to implement subsequent decoding using known pilot signals.
  • the receiving end device may estimate, according to the overlapping ratio of the channels, which of the data subcarriers transmitted by the pilot subcarrier in the interference signal overlaps, and then cancel the interference on the known pilot subcarrier to obtain the data subcarrier. On its own data. Finally, subsequent equalization and decoding are performed.
  • 4 is a schematic diagram of interference cancellation according to an embodiment of the present invention. As shown in FIG. 4, transmission 2 is data required by the receiving device, and transmission 1 is data of other users on the parallel channel. Pilot subcarrier at transmission 1 And the data subcarrier of transmission 2 At the overlapping position, the received data y can be expressed as equation (9):
  • h t represents the channel impulse response vector of the channel on which transmission 1 is located
  • n t represents the white noise representing the channel on which transmission 1 is located
  • h i represents the impulse response vector of the channel on which transmission 2 is located
  • n i represents the white noise representing the channel on which transmission 2 is located.
  • the decoding unit 1206 is specifically configured to determine that the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability. Then, the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the receiving device can assign different weights to different data, so as to maximize the use of reliable data for decoding, and extract useful information from unreliable data. In this way, the embodiment of the present invention can further improve the decoding success rate.
  • the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability, which is relatively speaking, and the specific weight is The example is not limited.
  • the decoding unit 1206 is specifically configured to: when decoding the decoded coded bits based on the weight, determine the code distance d of the estimated value according to the following formula (11):
  • each estimated value of the code is compared, and the estimated value in which the code distance is the smallest is taken as the final decoding result.
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the decoding unit 1206 is specifically configured to determine the weight w(i) according to the following formula (12):
  • the determining unit 1201 is further configured to determine, by using the time domain detection, the energy of the received signal in the channel. If the energy of the received signal is greater than a preset threshold, it is determined that the channel is busy. When the channel is busy, the overlapping ratio of the channels is determined according to the energy of the received signal in the channel.
  • FIG. 13 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device shown in FIG. 13 is the sender device in the communication process.
  • the communication device 130 includes a receiving unit 1301, an interleaving unit 1302, a modulating unit 1303, and a transmitting unit 1304.
  • the receiving unit 1301 is configured to receive indication information from the receiving end device, where the indication information is used to indicate an adaptive interleaving method used when the channel is specifically overlapped.
  • the indication information includes the overlapping ratio of the channels.
  • the receiving end device and the transmitting end device can pre-agreed the adaptive interleaving method used when the channel overlap ratio is used.
  • the receiving device after determining the channel overlap ratio, the receiving device directly transmits the overlap ratio to the transmitting device.
  • the indication information may also directly carry the index number of the adaptive interleaving method.
  • the receiving end device and the transmitting end device pre-agreed the adaptive interleaving method used when each channel overlap ratio, and assign an index number to each adaptive interleaving method.
  • the receiving end device can directly send the index number of the corresponding adaptive interleaving method to the sending end device according to the overlapping ratio of the current channel.
  • the interleaving unit 1302 is configured to adaptively interleave the coded bits according to the adaptive interleaving method indicated by the indication information to obtain the interleaved bits that are collision-randomized.
  • the indication information includes an overlap ratio.
  • the transmitting device learns the overlapping ratio
  • the coding bit is interleaved according to the adaptive interleaving method corresponding to the overlapping ratio, so that the collision caused by the overlapping portion of the channel can be randomized, thereby ensuring that the receiving device can successfully decode the received data.
  • the indication information includes an index number of the adaptive interleaving method, and the transmitting end device adaptively interleaves the coded bits according to the index number, so that the conflict caused by the overlapping part of the channel can be randomized, thereby ensuring that the receiving end device can successfully receive the interference.
  • the data is correctly decoded.
  • the modulating unit 1303 is configured to modulate the interleaved bits to obtain modulated data.
  • the sending unit 1304 is configured to send the modulated data to the receiving end device via the channel.
  • the receiving end device before performing data transmission, the receiving end device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the indication information includes a channel overlap ratio 1/P
  • Figure 7 shows an adaptive interleaving method used when the channels are 1/4 overlapped.
  • the coded bits are divided into four groups G 1 , G 2 , G 3 , G 4 .
  • the coded bits (13, 14, 15, 16 ) of the G 4 group correspond to overlapping portions of the channel, that is, collision bits.
  • the coded bits (13, 14, 15, 16 ) of the G 4 group are evenly spread into all coded bits by the packet interleaver, and the collision is randomized to obtain the bits after the interleaving (1, 9, 5, 13, 2, 10,6,14,3,11,7,15,4,12,8,16).
  • the adaptive interleaving method is similar under other channel overlap ratios, and is not described here to avoid repetition.
  • the sending unit 1304 is further configured to send an adaptive frame, which is adaptive.
  • the frame should be used to notify surrounding communication devices to protect the ongoing data transfer in the current system.
  • FIG. 14 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device shown in FIG. 14 is the transmitting device in the communication process.
  • the communication device 140 includes a determining unit 1401, an interleaving unit 1402, a modulating unit 1403, and a transmitting unit 1404.
  • the determining unit 1401 is configured to determine an overlapping ratio of the channels according to the energy of the received signal in the channel.
  • a WLAN system may divide a wireless communication resource into a plurality of channels that partially overlap with channels of adjacent frequency bands.
  • the channels currently available to the communication device may not overlap with other channels or have different overlapping ratios with other channels.
  • the transmitting device when preparing to communicate with the receiving device, the transmitting device first detects the energy of the received signal in the current channel. Then, based on the energy of the received signal, the overlap ratio of the current channel is determined.
  • the interleaving unit 1402 is configured to perform adaptive interleaving on the coded bits according to the overlap ratio to obtain interleaved bits that are collision-randomized.
  • the coding bit is interleaved according to the adaptive interleaving method corresponding to the overlapping ratio, so that the collision caused by the overlapping portion of the channel can be randomized, thereby ensuring that the receiving device can successfully receive the received data. Decode.
  • the modulating unit 1403 is configured to modulate the interleaved bits to obtain modulated data.
  • the sending unit 1404 is configured to send modulation data to the receiving end device via a channel.
  • the transmitting device before performing data transmission, the transmitting device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the determining unit 1401 is specifically configured to determine an energy spectrum of the channel according to the energy of the received signal in the channel. Then, based on the energy spectrum, the overlapping ratio of the channels is determined.
  • FIG. 3 shows the energy spectra for the four channel overlap ratios, 1/4, 1/2, 3/4, and full overlap, respectively. It should be understood that these four examples are only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.
  • media access control (English: Media Access Control, MAC for short) detection and access module can be set on the sending device side.
  • the module uses time domain detection and frequency domain two steps. Analysis, real-time judgment of the current channel overlap ratio to determine whether to access the channel for parallel transmission.
  • the transmitting device may perform channel energy detection to determine the energy of the received signal in the current channel. Then, the frequency domain analysis is performed, and the energy and frequency of the received signal are respectively normalized to obtain an energy spectrum. Finally, the energy spectrum of the current channel is compared with the four energy spectra in FIG. 3, and the overlap ratio corresponding to the closest energy spectrum is determined as the overlap ratio of the current channel.
  • the overlap ratio is 1/P.
  • the coded bits are divided into four groups G 1 , G 2 , G 3 , G 4 .
  • the coded bits (13, 14, 15, 16 ) of the G 4 group correspond to overlapping portions of the channel, that is, collision bits.
  • the coded bits (13, 14, 15, 16 ) of the G 4 group are evenly spread into all coded bits by the packet interleaver, and the collision is randomized to obtain the bits after the interleaving (1, 9, 5, 13, 2, 10,6,14,3,11,7,15,4,12,8,16).
  • the adaptive interleaving method is similar under other channel overlap ratios, and is not described here to avoid repetition.
  • the determining unit 1401 is further configured to determine, by using the time domain detection, the energy of the received signal in the channel. If the energy of the received signal is greater than a preset threshold, it is determined that the channel is busy. When the channel is busy, the overlapping ratio of the channels is determined according to the energy of the received signal in the channel.
  • FIG. 15 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device shown in Fig. 15 is the receiving device in the communication process.
  • the communication device 150 includes a receiving unit 1501, a demodulating unit 1502, an obtaining unit 1503, a deinterleaving unit 1504, and a decoding unit 1505.
  • the receiving unit 1501 is configured to receive modulation data from the source device.
  • the demodulation unit 1502 is configured to demodulate the modulated data to obtain demodulated data.
  • the acquiring unit 1503 is configured to acquire adaptive interleaving information of the modulated data, where the adaptive interleaving information corresponds to the overlapping ratio of the channels.
  • the deinterleaving unit 1504 is configured to deinterleave the demodulated data according to the adaptive interleaving information to obtain coded bits after deinterleaving.
  • the decoding unit 1505 is configured to decode the deinterleaved coded bits.
  • the transmitting device before performing data transmission, the transmitting device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the acquiring unit 1503 is specifically configured to obtain adaptive interlace information from a preamble of the modulated data.
  • the transmitting end device sends the adaptive interleaving information to the receiving end device through the preamble field of the data. After receiving the data from the transmitting device, the receiving device acquires adaptive interleaving information from the preamble field.
  • the decoding unit 1505 is specifically configured to: cancel the interference of the pilot signal on the coded bits according to the pilot signal. Then, the coded bits after interference cancellation are decoded.
  • a pilot assist decoding module may be provided on the receiving device side to implement subsequent decoding using known pilot signals.
  • the receiving end device may estimate, according to the overlapping ratio of the channels, which of the data subcarriers transmitted by the pilot subcarrier in the interference signal overlaps, and then cancel the interference on the known pilot subcarrier to obtain the data subcarrier. On its own data. Finally, subsequent equalization and decoding are performed. As shown in FIG. 4, transmission 2 is data required by the receiving device, and transmission 1 is data of other users on the parallel channel. Pilot subcarrier at transmission 1 And the data subcarrier of transmission 2 At the overlapping position, the received data y can be expressed as equation (13):
  • h t represents the channel impulse response vector of the channel on which transmission 1 is located
  • n t represents the white noise representing the channel on which transmission 1 is located
  • h i represents the impulse response vector of the channel on which transmission 2 is located
  • n i represents the white noise representing the channel on which transmission 2 is located.
  • the decoding unit 1505 is specifically configured to determine that the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is highly reliable. Sex. Then, the low-reliability coded bits are given a small weight, the highly reliable coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the receiving device can assign different weights to different data, so as to maximize the use of reliable data for decoding, and extract useful information from unreliable data. In this way, the embodiment of the present invention can further improve the decoding success rate.
  • the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability, which is relatively limited.
  • the specific weight size is not limited in the embodiment of the present invention.
  • the decoding unit 1505 is specifically configured to: when decoding the coded bits after deinterleaving based on the weight, determine the code distance d of the estimated value according to the following formula (15):
  • each estimated value of the code is compared, and the estimated value in which the code distance is the smallest is taken as the final decoding result.
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the decoding unit 1505 is specifically configured to determine the weight w(i) according to the following formula (16):
  • Figure 16 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device 160 of FIG. 16 can be used to implement the steps and methods in the above method embodiments.
  • communication device 160 includes an antenna 1601, a transmitter 1602, a receiver 1603, a processor 1604, and a memory 1605.
  • Processor 1604 controls the operation of communication device 160 and can be used to process signals.
  • Memory 1605 can include read only memory and random access memory and provides instructions and data to processor 1604.
  • Transmitter 1602 and receiver 1603 can be coupled to antenna 1601.
  • the various components of communication device 160 are coupled together by a bus system 1606, which in addition to the data bus includes a power bus, control bus, and status signals. line. However, for clarity of description, various buses are labeled as bus system 1606 in the figure.
  • the communication device 160 is a sink device, such as the AP 102 or STA (103a, 103b, 103c) shown in FIG.
  • memory 1605 can store instructions that cause processor 1604 to perform the following process:
  • the deinterleaved coded bits are decoded.
  • the receiving end device before performing data transmission, the receiving end device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the memory 1605 can also store instructions that cause the processor 1604 to perform the following process:
  • the energy spectrum of the channel is determined according to the energy of the received signal in the channel, and then the overlapping ratio of the channel is determined according to the energy spectrum.
  • the memory 1605 can also store instructions that cause the processor 1604 to perform the following process:
  • the interference of the pilot signals with the coded bits is cancelled according to the pilot signals, and then the coded bits after the interference cancellation are decoded.
  • the memory 1605 can also store instructions that cause the processor 1604 to perform the following process:
  • the decoded coded bits When the decoded coded bits are decoded, it is determined that the reliability of the coded bits corresponding to the overlapping portion of the channel is low reliability, and the reliability of the remaining coded bits is high reliability; then, the low reliability coded bits are given to a small
  • the weights assign high-reliability coded bits to large weights, and decode the de-interleaved coded bits based on the weights.
  • the memory 1605 may also be stored such that the processor 1604 performs Instructions for the following process:
  • the code distance d of the estimated values is determined according to the following formula (17),
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the memory 1605 can also store instructions that cause the processor 1604 to perform the following process:
  • the memory 1605 can also store instructions that cause the processor 1604 to perform the following process:
  • the energy of the received signal in the channel is determined by time domain detection; if the energy of the received signal is greater than a preset threshold, it is determined that the channel is busy. In this case, when the channel is busy, the overlapping ratio of the channels is determined according to the energy of the received signal in the channel.
  • Figure 17 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device 170 of FIG. 17 can be used to implement the steps and methods in the above method embodiments.
  • communication device 170 includes an antenna 1701, a transmitter 1702, a receiver 1703, a processor 1704, and a memory 1705.
  • Processor 1704 controls the operation of communication device 170 and can be used to process signals.
  • Memory 1705 can include read only memory and random access memory and provides instructions and data to processor 1704.
  • Transmitter 1702 and receiver 1703 can be coupled to antenna 1701.
  • the various components of communication device 170 are coupled together by a bus system 1706, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1706 in the figure.
  • the communication device 170 is a transmitting device, such as the AP 102 or STA (103a, 103b, 103c) shown in FIG.
  • memory 1705 can store instructions that cause processor 1704 to perform the following process:
  • the indication information is used to indicate an adaptive interleaving method used when the channel is specifically overlapped
  • the interleaved bits are modulated to obtain modulated data, and the modulated data is transmitted to the receiving device via the channel.
  • the receiving end device before performing data transmission, the receiving end device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the memory 1705 can store instructions that cause the processor 1704 to perform the following process:
  • the indication information includes a channel overlap ratio of 1/P. According to the adaptive interleaving method indicated by the indication information, the coded bits are adaptively interleaved to obtain the conflict-randomized interleaved bits.
  • Figure 18 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device 180 of FIG. 18 can be used to implement the steps and methods in the above method embodiments.
  • communication device 180 includes an antenna 1801, a transmitter 1802, a receiver 1803, a processor 1804, and a memory 1805.
  • the processor 1804 controls the operation of the communication device 180 and can be used to process signals.
  • Memory 1805 can include read only memory and random access memory and provides instructions and data to processor 1804.
  • Transmitter 1802 and receiver 1803 can be coupled to antenna 1801.
  • the various components of communication device 180 are coupled together by a bus system 1806, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1806 in the figure.
  • the communication device 180 is a transmitting device, such as the AP 102 or STA (103a, 103b, 103c) shown in FIG.
  • memory 1805 can store instructions that cause processor 1804 to perform the following process:
  • the coded bits are adaptively interleaved to obtain conflicting randomized interleaved bits
  • the interleaved bits are modulated to obtain modulated data, and the modulated data is transmitted to the receiving device via the channel.
  • the transmitting device before performing data transmission, the transmitting device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • the memory 1805 can also store instructions that cause the processor 1804 to perform the following process:
  • the energy spectrum of the channel is determined according to the energy of the received signal in the channel; then, according to the energy spectrum, the overlapping ratio of the channel is determined.
  • the memory 1805 may also store instructions that cause the processor 1804 to perform the following process:
  • the memory 1805 may also store instructions that cause the processor 1804 to perform the following process:
  • the overlapping ratio of the channels is determined according to the energy of the received signal in the channel.
  • Figure 19 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device 190 of FIG. 19 can be used to implement the steps and methods in the above method embodiments.
  • communication device 190 includes an antenna 1901, a transmitter 1902, a receiver 1903, a processor 1904, and a memory 1905.
  • the processor 1904 controls the operation of the communication device 190 and can be used to process signals.
  • Memory 1905 can include read only memory and random access memory and provides instructions and data to processor 1904.
  • Transmitter 1902 and receiver 1903 can be coupled to an antenna 1901.
  • the various components of communication device 190 are coupled together by a bus system 1906, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1906 in the figure.
  • the communication device 190 is a sink device, such as the AP 102 or STA (103a, 103b, 103c) shown in FIG.
  • memory 1905 can store instructions that cause processor 1904 to perform the following process:
  • the deinterleaved coded bits are decoded.
  • the transmitting device before performing data transmission, the transmitting device first determines the overlapping ratio of the channels.
  • the coded bits are adaptively interleaved according to the overlapping ratio of the channels, so that the collision caused by the overlapping portions of the channels can be randomized, thereby ensuring that the receiving end device can successfully decode the received data. Therefore, the embodiment of the present invention can maximize the utilization of wireless communication resources while ensuring normal communication, thereby improving system throughput.
  • memory 1905 may store instructions that cause processor 1904 to perform the following process:
  • the adaptive interleaving information of the modulated data is acquired, the adaptive interleaving information is acquired from the preamble of the modulated data.
  • the memory 1905 can store instructions that cause the processor 1904 to perform the following process:
  • the interference of the pilot signals with the coded bits is cancelled according to the pilot signals; then, the coded bits after the interference cancellation are decoded.
  • the memory 1905 can store instructions that cause the processor 1904 to perform the following process:
  • the decoded coded bits When decoding the decoded coded bits, first determine that the reliability of the coded bits corresponding to the overlapping portions of the channel is low reliability, and the reliability of the remaining coded bits is high reliability; then, the low reliability coded bits are given to small The weights of the high-reliability coded bits are given a large weight, and the de-interleaved coded bits are decoded based on the weights.
  • the memory 1905 can store instructions that cause the processor 1904 to perform the following process:
  • the code distance d of the estimated values is determined according to the following formula (19),
  • y(i) denotes the coded bits after deinterleaving
  • w(i) denotes the weight given to y(i)
  • h t (i) denotes the channel impulse response vector
  • m i ' denotes the estimated value of the i th data block
  • N denotes the number of data blocks.
  • the memory 1905 can store instructions that cause the processor 1904 to perform the following process:
  • the weight w(i) is determined according to the following formula (20),
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division, and may be implemented in actual implementation.
  • multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English: Read-Only Memory, abbreviated as: ROM), a random access memory (English: Random Access Memory, abbreviated as: RAM), a magnetic disk or an optical disk, and the like.
  • ROM Read-Only Memory
  • RAM Random Access Memory

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Abstract

本发明公开了一种无线通信的方法和通信设备，该方法包括：根据信道中接收信号的能量，确定信道的重叠比例（201）；向发送端设备发送指示信息，指示信息用于指示发送端设备在重叠比例时发送数据所使用的自适应交织方法（202）；在信道从发送端设备接收数据，将数据解调，得到解调后的数据（203）；根据自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特（204）；将解交织后的编码比特解码（205）。本发明实施例能够提高系统吞吐量。

Description

无线通信的方法和通信设备 技术领域
本发明实施例涉及无线通信领域，并且更具体地，涉及一种无线通信的方法和通信设备。
背景技术
无线网络利用无线技术在空中传输数据、语音和视频信号。作为传统布线网络的一种替代方案或延伸，无线网络把个人从办公桌边解放了出来，使他们可以随时随地获取信息，提高了员工的办公效率。由于无线信号的广播特性，无线网络并不能容忍邻近的节点在重叠信道上并行传输。否则，并行传输的两个无线信号在空中叠加，会对彼此的传输造成一定的干扰，最终导致传输失败。
随着无线网络传输技术的蓬勃发展，无线局域网(英文：Wireless Local Area Network，简称：WLAN)得到广泛的应用。无线网络资源也日趋紧张，WLAN系统已经不能保证为每个节点分配专有的、非重叠的信道进行数据传输。因此，使部分信道重叠已经成为了WLAN必然的发展趋势。
发明内容
本发明实施例提供了一种无线通信的方法和通信设备，能够提高系统吞吐量。
第一方面，本发明实施例提供了一种无线通信的方法，包括：
根据信道中接收信号的能量，确定信道的重叠比例；
向发送端设备发送指示信息，指示信息用于指示发送端设备在重叠比例时发送数据所使用的自适应交织方法；
在信道从发送端设备接收数据，将数据解调，得到解调后的数据；
根据自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特；
将解交织后的编码比特解码。
结合第一方面，在第一方面的第一种实现方式中，根据信道中接收信号的能量，确定信道的重叠比例，包括：
根据信道中接收信号的能量，确定信道的能量谱；
根据能量谱，确定信道的重叠比例。
结合第一方面及其上述实现方式，在第一方面的第二种实现方式中，将解交织后的编码比特解码，包括：
根据导频信号，消除导频信号对编码比特的干扰；
对消除干扰后的编码比特进行解码。
结合第一方面及其上述实现方式，在第一方面的第三种实现方式中，将解交织后的编码比特解码，包括：
确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
结合第一方面及其上述实现方式，在第一方面的第四种实现方式中，基于权重对解交织后的编码比特进行解码，包括：
在基于权重对解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
Figure PCTCN2014094605-appb-000001
其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000002
表示mi′经过编码调制后的数据，N表示数据块的数量。
结合第一方面及其上述实现方式，在第一方面的第五种实现方式中，根据以下公式确定权重w(i)，
Figure PCTCN2014094605-appb-000003
其中，
Figure PCTCN2014094605-appb-000004
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
结合第一方面及其上述实现方式，在第一方面的第六种实现方式中，在根据信道中接收信号的能量，确定信道的重叠比例之前，该方法还包括：
通过时域检测，确定信道中接收信号的能量；
若接收信号的能量大于预设的阈值，确定信道繁忙；
根据信道中接收信号的能量，确定信道的重叠比例，包括：
当信道繁忙时，根据信道中接收信号的能量，确定信道的重叠比例。
第二方面，本发明实施例提供了一种无线通信的方法，包括：
从接收端设备接收指示信息，指示信息用于指示在信道特定重叠比例时使用的自适应交织方法；
根据指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特；
将交织比特进行调制，得到调制数据，并经由信道向接收端设备发送调制数据。
结合第二方面，在第二方面的第一种实现方式中，指示信息包括信道重叠比例1/P，根据指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特，包括：
根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组；
利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
第三方面，本发明实施例提供了一种无线通信的方法，包括：
根据信道中接收信号的能量，确定信道的重叠比例；
根据重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特；
将交织比特进行调制，得到调制数据，并经由信道向接收端设备发送调制数据。
结合第三方面，在第三方面的第一种实现方式中，根据信道中接收信号的能量，确定信道的重叠比例，包括：
根据信道中接收信号的能量，确定信道的能量谱；
根据能量谱，确定信道的重叠比例。
结合第三方面及其上述实现方式，在第三方面的第二种实现方式中，重叠比例为1/P，根据重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特，包括：
根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组；
利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
结合第三方面及其上述实现方式，在第三方面的第三种实现方式中，在 根据信道中接收信号的能量，确定信道的重叠比例之前，该方法还包括：
通过时域检测，确定信道中接收信号的能量；
若接收信号的能量大于预设的阈值，确定信道繁忙；
根据信道中接收信号的能量，确定信道的重叠比例，包括：
当信道繁忙时，根据信道中接收信号的能量，确定信道的重叠比例。
第四方面，本发明实施例提供了一种无线通信的方法，包括：
从发送端设备接收调制数据，将调制数据解调，得到解调后的数据；
获取调制数据的自适应交织信息，自适应交织信息与信道的重叠比例对应；
根据自适应交织信息，将解调后的数据解交织，得到解交织后的编码比特；
将解交织后的编码比特解码。
结合第四方面，在第四方面的第一种实现方式中，获取调制数据的自适应交织信息，包括：
从调制数据的前导，获取自适应交织信息。
结合第四方面及其上述实现方式，在第四方面的第二种实现方式中，将解交织后的编码比特解码，包括：
根据导频信号，消除导频信号对编码比特的干扰；
对消除干扰后的编码比特进行解码。
结合第四方面及其上述实现方式，在第四方面的第三种实现方式中，将解交织后的编码比特解码，包括：
确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
结合第四方面及其上述实现方式，在第四方面的第四种实现方式中，，基于权重对解交织后的编码比特进行解码，包括：
在基于权重对解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
Figure PCTCN2014094605-appb-000005
其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000006
表示mi′经过编码调制后的数据，N表示数据块的数量。
结合第四方面及其上述实现方式，在第四方面的第五种实现方式中，根据以下公式确定权重w(i)，
Figure PCTCN2014094605-appb-000007
其中，
Figure PCTCN2014094605-appb-000008
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
第五方面，本发明实施例提供了一种通信设备，包括：
确定单元，用于根据信道中接收信号的能量，确定信道的重叠比例；
发送单元，用于向发送端设备发送指示信息，指示信息用于指示发送端设备在重叠比例时发送数据所使用的自适应交织方法；
接收单元，用于在信道从发送端设备接收数据；
解调单元，用于将所述数据解调，得到解调后的数据；
解交织单元，用于根据自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特；
解码单元，用于将解交织后的编码比特解码。
结合第五方面，在第五方面的第一种实现方式中，确定单元具体用于，
根据信道中接收信号的能量，确定信道的能量谱；
根据能量谱，确定信道的重叠比例。
结合第五方面及其上述实现方式，在第五方面的第二种实现方式中，解码单元具体用于，
根据导频信号，消除导频信号对编码比特的干扰；
对消除干扰后的编码比特进行解码。
结合第五方面及其上述实现方式，在第五方面的第三种实现方式中，解码单元具体用于，
确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
结合第五方面及其上述实现方式，在第五方面的第四种实现方式中，解码单元具体用于，
在基于权重对解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
Figure PCTCN2014094605-appb-000009
其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000010
表示mi′经过编码调制后的数据，N表示数据块的数量。
结合第五方面及其上述实现方式，在第五方面的第五种实现方式中，解码单元具体用于，
根据以下公式确定权重w(i)，
Figure PCTCN2014094605-appb-000011
其中，
Figure PCTCN2014094605-appb-000012
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
结合第五方面及其上述实现方式，在第五方面的第六种实现方式中，确定单元还用于，
通过时域检测，确定信道中接收信号的能量；
若接收信号的能量大于预设的阈值，确定信道繁忙；
当信道繁忙时，根据信道中接收信号的能量，确定信道的重叠比例。
第六方面，本发明实施例提供了一种通信设备，包括：
接收单元，用于从接收端设备接收指示信息，指示信息用于指示在信道特定重叠比例时使用的自适应交织方法；
交织单元，用于根据指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特；
调制单元，用于将交织比特进行调制，得到调制数据；
发送单元，用于经由信道向接收端设备发送调制数据。
结合第六方面，在第六方面的第一种实现方式中，指示信息包括信道重叠比例1/P，交织单元具体用于，
根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组；
利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比 特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
第七方面，本发明实施例提供了一种通信设备，包括：
确定单元，用于根据信道中接收信号的能量，确定信道的重叠比例；
交织单元，用于根据重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特；
调制单元，用于将交织比特进行调制，得到调制数据；
发送单元，用于经由信道向接收端设备发送调制数据。
结合第七方面，在第七方面的第一种实现方式中，确定单元具体用于，
根据信道中接收信号的能量，确定信道的能量谱；
根据能量谱，确定信道的重叠比例。
结合第七方面及其上述实现方式，在第七方面的第二种实现方式中，重叠比例为1/P，交织单元具体用于，
根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组；
利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
结合第七方面及其上述实现方式，在第七方面的第三种实现方式中，确定单元还用于，
通过时域检测，确定信道中接收信号的能量；
若接收信号的能量大于预设的阈值，确定信道繁忙；
当信道繁忙时，根据信道中接收信号的能量，确定信道的重叠比例。
第八方面，本发明实施例提供了一种通信设备，包括：
接收单元，用于从发送端设备接收调制数据；
解调单元，用于将调制数据解调，得到解调后的数据；
获取单元，用于获取调制数据的自适应交织信息，自适应交织信息与信道的重叠比例对应；
解交织单元，用于根据自适应交织信息，将解调后的数据解交织，得到解交织后的编码比特；
解码单元，用于将解交织后的编码比特解码。
结合第八方面，在第八方面的第一种实现方式中，获取单元具体用于，从调制数据的前导，获取自适应交织信息。
结合第八方面及其上述实现方式，在第八方面的第二种实现方式中，解 码单元具体用于，
根据导频信号，消除导频信号对编码比特的干扰；
对消除干扰后的编码比特进行解码。
结合第八方面及其上述实现方式，在第八方面的第三种实现方式中，解码单元具体用于，
确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
结合第八方面及其上述实现方式，在第八方面的第四种实现方式中，解码单元具体用于，
在基于权重对解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
Figure PCTCN2014094605-appb-000013
其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000014
表示mi′经过编码调制后的数据，N表示数据块的数量。
结合第八方面及其上述实现方式，在第八方面的第五种实现方式中，解码单元具体用于，
根据以下公式确定权重w(i)，
Figure PCTCN2014094605-appb-000015
其中，
Figure PCTCN2014094605-appb-000016
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
基于上述技术方案，在进行数据传输之前，接收端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例可应用的通信系统的示意性架构图。
图2是本发明一个实施例的无线通信的方法的示意性流程图。
图3是本发明实施例的能量谱的示意图。
图4是本发明实施例的消除干扰的示意图。
图5是本发明另一实施例的无线通信的方法的示意性流程图。
图6是本发明另一实施例的无线通信的方法的示意性流程图。
图7是本发明实施例的自适应交织的示意图。
图8是本发明实施例的系统吞吐量的示意图。
图9是本发明另一实施例的无线通信的方法的示意性流程图。
图10是本发明另一实施例的无线通信的方法的示意性流程图。
图11本发明另一实施例的无线通信的方法的示意性流程图。
图12是本发明一个实施例的通信设备的示意性框图。
图13是本发明另一实施例的通信设备的示意性框图。
图14是本发明另一实施例的通信设备的示意性框图。
图15是本发明另一实施例的通信设备的示意性框图。
图16是本发明另一实施例的通信设备的示意性框图。
图17是本发明另一实施例的通信设备的示意性框图。
图18是本发明另一实施例的通信设备的示意性框图。
图19是本发明另一实施例的通信设备的示意性框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
应理解，本发明实施例的技术方案可以应用于WLAN系统中。在本发明实施例中，接入点AP可以将有线网络转化为无线网络，为站点STA提供 无线接入服务。站点STA可以为用户设备(英文：User Equipment，简称为“UE”)、终端(英文：Terminal)、移动台(英文：Mobile Station，简称为“MS”)、移动终端(英文：Mobile Terminal)等。例如，STA可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等。又如，STA还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
为描述方便，下述实施例将以接入点AP和站点STA为例进行说明。
为描述方便，下述实施例将以接入点AP和站点STA为例进行说明。
图1是本发明实施例可应用的通信系统的示意性架构图。图1中的通信系统为WLAN系统，这里以覆盖范围为101的AP 102为例进行描述。应理解，本发明实施例对WLAN系统中AP的数量不作限定。
STA(103a，103b，103c)落在AP 102的覆盖范围101内，并且接入至AP 102进行通信。如果系统为STA(103a，103b，103c)和AP 102分配非重叠的信道进行通信，会导致无线通信资源利用率低，整个WLAN系统的无线通信资源紧张。
本发明实施例提供了一种无线通信的方法和通信设备，能够提高系统吞吐量。应理解，上述通信系统仅是一个示例，本发明实施例的保护范围并不限于此。本发明实施例可以应用于下一代Wi-Fi系统中，比如IEEE 802.11ax标准的HEW系统，也可以应用于以其他无线局域网系统，还可以应用于蜂窝网络。
图2是本发明一个实施例的无线通信的方法的示意性流程图。图2的方法可以由本次通信过程中的接收端设备执行。如图1中示出的AP 102或STA(103a，103b，103c)。
201，根据信道中接收信号的能量，确定信道的重叠比例。
例如，WLAN系统可以将无线通信资源划分为多个与邻近频段的信道部分重叠的信道。根据邻近频段的信道的使用情况，通信设备当前可用的信道可能会不与其它信道重叠或者与其它信道有不同的重叠比例。这种情况下，在准备与发送端设备进行通信时，接收端设备先检测确定当前信道中接收信号的能量。然后，根据接收信号的能量，确定当前信道的重叠比例。
202，向发送端设备发送指示信息，指示信息用于指示发送端设备在重叠比例时发送数据所使用的自适应交织方法。
例如，指示信息包括信道的重叠比例。这种情况下，接收端设备与发送 端设备可以预先约定各信道重叠比例时所使用的自适应交织方法。这样，在确定信道重叠比例之后，接收端设备直接将重叠比例发送给发送端设备。发送端设备获知重叠比例后，根据该重叠比例对应的自适应交织方法对编码比特进行交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
应理解，指示信息也可以直接携带自适应交织方法的索引号。例如，接收端设备与发送端设备预先约定各信道重叠比例时所使用的自适应交织方法，并为每一种自适应交织方法分配一个索引号。这种情况下，接收端设备可以直接根据当前信道的重叠比例，向发送端设备发送对应的自适应交织方法的索引号。这样，发送端设备根据索引号对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能成功对接收到的数据进行正确解码。本发明实施例的保护范围并不限于此，其它等价变换的实现方式都应落在本发明实施例的保护范围内。
203，在信道从发送端设备接收数据，将数据解调，得到解调后的数据；
204，根据自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特。
例如，从发送端设备接收到数据后，先将接收到的数据解调，得到解调后的数据。然后，根据指示信息指示的自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特。
205，将解交织后的编码比特解码。
例如，将前述方法解交织后的编码比特进行解码。由于信道的重叠部分引起的冲突是随机化的，接收端可以成功译码解交织后的编码比特。
基于上述技术方案，在进行数据传输之前，接收端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，根据信道中接收信号的能量，确定信道的重叠比例时，可以先根据信道中接收信号的能量，确定信道的能量谱。然后，根据能量谱，确定信道的重叠比例。
图3是本发明实施例的能量谱的示意图。不同的信道重叠比例下，能量 谱具有不同的分布。图3分别示出了4种信道重叠比例下的能量谱，分别是1/4、1/2、3/4和完全重叠。应理解这4个例子只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。
例如，可以在接收端设备侧设置媒体接入控制(英文：Media Access Control，简称：MAC)检测和接入模块，该模块利用时域检测和频域两步分析，实时的判断当前信道重叠比例，以决定是否接入信道进行并行传输。在需要进行数据传输时，接收端设备可以先进行信道能量检测，确定当前信道中接收信号的能量。然后，进入频域分析，将接收信号的能量和频率分别进行规格化，得到能量谱。最后，将当前信道的能量谱与图3中的4个能量谱进行比较，确定最接近的能量谱对应的重叠比例为当前信道的重叠比例。
可选地，作为另一实施例，将解交织后的编码比特解码时，可以先根据导频信号，消除导频信号对编码比特的干扰。然后，对消除干扰后的编码比特进行解码。
例如，可以在接收端设备侧设置导频辅助解码模块，来实现利用已知的导频信号辅助后续的解码。接收端设备可以根据信道的重叠比例推测出干扰信号中导频子载波与自身传输的哪一个数据子载波重叠，然后将已知的导频子载波上的当作干扰进行消除，获得数据子载波上的自身的数据。最后，再进行后续的均衡和解码。图4是本发明实施例的消除干扰的示意图。如图4所示，传输2是接收端设备需要的数据，而传输1是并行信道上其它用户的数据。在传输1的导频子载波
Figure PCTCN2014094605-appb-000017
和传输2的数据子载波
Figure PCTCN2014094605-appb-000018
重叠的位置，接收到的数据y可以表示为公式(1)：
Figure PCTCN2014094605-appb-000019
其中，ht表示传输1所在信道的信道冲击响应向量，nt表示表示传输1所在信道的白噪声，hi表示传输2所在信道的冲击响应向量，ni表示表示传输2所在信道的白噪声。
这样，接收端设备需要获得的数据
Figure PCTCN2014094605-appb-000020
可以表示为公式(2)：
Figure PCTCN2014094605-appb-000021
由于传输1的导频子载波
Figure PCTCN2014094605-appb-000022
是已知的，因而可以带入公式(2)将其消除，从而获得传输2的数据子载波上的数据
Figure PCTCN2014094605-appb-000023
也即消除了导频信号对编码比特的干扰。这样，本发明实施例能够进一步提高解码成功率。
可选地，作为另一实施例，将解交织后的编码比特解码时，可以先确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性。然后，将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
例如，通常情况下，位于信道重叠部分干扰频段的数据有着较低的可靠性，而位于非干扰频段的数据有着比较高的可靠性。接收端设备可以给不同的数据赋予不同的权重，以此最大化的利用可靠的数据进行解码，而从不可靠的数据中提取出有用的信息。这样，本发明实施例能够进一步提高解码成功率。
应理解，信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性，是相对而言的，对于具体的权重大小本发明实施例不做限定。
可选地，作为另一实施例，在基于权重对解交织后的编码比特进行解码时，根据以下公式(3)确定估计值的码距d：
Figure PCTCN2014094605-appb-000024
然后，比较各个估计值得码距，将其中码距最小的估计值作为最终的解码结果。其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000025
表示mi′经过编码调制后的数据，N表示数据块的数量。
可选地，作为另一实施例，根据以下公式(4)确定权重w(i)：
Figure PCTCN2014094605-appb-000026
其中，
Figure PCTCN2014094605-appb-000027
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
可选地，作为另一实施例，在根据信道中接收信号的能量，确定信道的重叠比例之前，可以通过时域检测，确定信道中接收信号的能量。若接收信号的能量大于预设的阈值，确定信道繁忙。这种情况下，根据信道中接收信号的能量，确定信道的重叠比例时，当信道繁忙时，再根据信道中接收信号的能量，确定信道的重叠比例。
图5是本发明另一实施例的无线通信的方法的示意性流程图。下面将结合图5所示具体的例子详细描述本发明实施例。应注意，这些例子只是为了 帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。
501，准备接收数据时进行时域检测。
502，判断信道是否空闲，若信道空闲进入步骤503，反之进入步骤504。
例如，在接收端设备准备从发送端设备接收数据时，接收端设备的MAC检测和接入模块先进行时域检测，确定当前信道中的忙闲情况，再决定是否接入信道进行数据传输。具体地可以先通过时域检测确定当前信道中接收信号的能量，如果接收信号的能量大于预设的阈值，便确定当前信道繁忙，反之信道空闲。
503，在信道空闲时，退避后接收数据。
例如，在确定信道空闲时，接收端设备先进行退避，再进行数据传输，也即从发送端设备接收数据。
504，在信道繁忙时，确定当前信道的重叠比例1/P。
例如，在信道繁忙时，接收端设备可以对时域检测结果(信道中接收信号的能量)做频域分析，实时的确定当前信道的重叠比例1/P，以决定是否接入信道进行并行传输。具体的频域分析方法可以参照前文描述的方法，为避免重复，在此不再赘述。
505，判断重叠比例1/P是否小于3/4，小于时进入步骤507，反之进入步骤506。
例如，设定阈值3/4，判断1/P是否小于3/4。当1/P<3/4时，可以认为可以进行本次数据传输，反之认为不能进行本次数据传输。
506，发送第二次退避反馈。
例如，接收端设备向发送端设备发送第二次退避反馈，通知发送端设备进行退避。同时，接收端设备可以转入步骤501，再次进行时域检测，以确定当前信道中接收信号的能量。
507，发送自适应交织退避反馈。
例如，在确定1/P<3/4时，接收端设备向发送端设备发送自适应交织退避反馈(也即向发送端设备发送指示信息)，通知发送端设备进行退避，并使用相应的自适应交织方法对待发送的数据进行自适应交织。
508，从发送端设备接收数据。
509，提取控制信息。
例如，接收端设备从接收到的数据的前导部分提取控制信息，确定数据的自适应交织信息。
510，自适应解交织。
接收端设备根据步骤509中提取的控制信息，对接收到的数据进行解交织。
511，消除导频信号干扰。
例如，接收端设备利用已知的导频信号辅助解码，将已知的导频子载波上的当作干扰进行消除，获得数据子载波上的自身的数据。
512，基于权重解码。
例如，将信道的重叠部分对应的编码比特赋予小权重，将其余编码比特的赋予大权重，并基于权重对解交织后的编码比特进行解码。
这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
图6是本发明另一实施例的无线通信的方法的示意性流程图。图6的方法可以由本次通信过程中的发送端设备执行。如图1中示出的AP 102或STA(103a，103b，103c)。
601，从接收端设备接收指示信息，指示信息用于指示在信道特定重叠比例时使用的自适应交织方法。
例如，指示信息包括信道的重叠比例。这种情况下，接收端设备与发送端设备可以预先约定各信道重叠比例时所使用的自适应交织方法。这样，在确定信道重叠比例之后，接收端设备直接将重叠比例发送给发送端设备。
应理解，指示信息也可以直接携带自适应交织方法的索引号。例如，接收端设备与发送端设备预先约定各信道重叠比例时所使用的自适应交织方法，并为每一种自适应交织方法分配一个索引号。这种情况下，接收端设备可以直接根据当前信道的重叠比例，向发送端设备发送对应的自适应交织方法的索引号。本发明实施例的保护范围并不限于此，其它等价变换的实现方式都应落在本发明实施例的保护范围内。
602，根据指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特。
例如，指示信息包括重叠比例。发送端设备获知重叠比例后，根据该重 叠比例对应的自适应交织方法对编码比特进行交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
又如，指示信息包括自适应交织方法的索引号，发送端设备根据索引号对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能成功对接收到的数据进行正确解码。
603，将交织比特进行调制，得到调制数据，并经由信道向接收端设备发送调制数据。
基于上述技术方案，在进行数据传输之前，接收端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，指示信息包括信道重叠比例1/P，根据指示信息指示的自适应交织方法，将编码比特进行自适应交织时，根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组。
然后，利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
图7是本发明实施例的自适应交织的示意图。图7示出了在信道1/4重叠时使用的自适应交织方法。如图7所示，假设信道带宽为20M，信道的划分间隔为5M，那么将编码比特分为4组G1,G2,G3,G4。其中G4组的编码比特(13,14,15,16)对应于信道的重叠部分，也即是冲突比特。利用分组交织器将G4组的编码比特(13,14,15,16)均匀打散至全部编码比特中，使冲突随机化，得到交织之后的比特(1,9,5,13,2,10,6,14,3,11,7,15,4,12,8,16)。这样就保证了接收端设备在解交织之后，每一个分组编码比特之中，都至少有一部分是非冲突的比特，进而利用编码的冗余性能够成功解码接收到的数据。在其它信道重叠比例下，自适应交织的方法类似，为避免重复，在此不再赘述。
可选地，作为另一实施例，在经由信道向接收端设备发送调制数据之前，发送端设备可以先发送自适应帧通知周围的通信设备，以保护当前系统中正在进行的数据传输。
图8是本发明实施例的系统吞吐量的示意图。如图8所示，分别示出了 在1/4重叠比例下，不同的信号与干扰加噪声比SINR时四种通信方法分别对应的系统吞吐量。其中，Piros表示本发明实施例对应的系统吞吐量，ASN对应于Ref.2的通信方法，Remap对要那个于Ref.1的通信方法。由图8所示，本发明实施例的通信方法在不同的SINR时都有着较高的系统吞吐量。与现有的几种通信方法相比，在绝大多数情况下，能够显著提高系统吞吐量。
图9是本发明另一实施例的无线通信的方法的示意性流程图。图9的方法可以由本次通信过程中的发送端设备执行。如图1中示出的AP 102或STA(103a，103b，103c)。
901，根据信道中接收信号的能量，确定信道的重叠比例。
例如，WLAN系统可以将无线通信资源划分为多个与邻近频段的信道部分重叠的信道。根据邻近频段的信道的使用情况，通信设备当前可用的信道可能会不与其它信道重叠或者与其它信道有不同的重叠比例。这种情况下，在准备与接收端设备进行通信时，发送端设备先检测确定当前信道中接收信号的能量。然后，根据接收信号的能量，确定当前信道的重叠比例。
902，根据重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特。
例如，发送端设备获知重叠比例后，根据该重叠比例对应的自适应交织方法对编码比特进行交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
903，将交织比特进行调制，得到调制数据，并经由信道向接收端设备发送调制数据。
基于上述技术方案，在进行数据传输之前，发送端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，根据信道中接收信号的能量，确定信道的重叠比例时，可以先根据信道中接收信号的能量，确定信道的能量谱。然后，根据能量谱，确定信道的重叠比例。
不同的信道重叠比例下，能量谱具有不同的分布。图3分别示出了4种信道重叠比例下的能量谱，分别是1/4、1/2、3/4和完全重叠。应理解这4 个例子只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。
例如，可以在发送端设备侧设置媒体接入控制(英文：Media Access Control，简称：MAC)检测和接入模块，该模块利用时域检测和频域两步分析，实时的判断当前信道重叠比例，以决定是否接入信道进行并行传输。在需要进行数据传输时，发送端设备可以先进行信道能量检测，确定当前信道中接收信号的能量。然后，进入频域分析，将接收信号的能量和频率分别进行规格化，得到能量谱。最后，将当前信道的能量谱与图3中的4个能量谱进行比较，确定最接近的能量谱对应的重叠比例为当前信道的重叠比例。
可选地，作为另一实施例，重叠比例为1/P。根据重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特时，可以先根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组。然后，利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
如图7所示，假设信道带宽为20M，信道的划分间隔为5M，那么将编码比特分为4组G1,G2,G3,G4。其中G4组的编码比特(13,14,15,16)对应于信道的重叠部分，也即是冲突比特。利用分组交织器将G4组的编码比特(13,14,15,16)均匀打散至全部编码比特中，使冲突随机化，得到交织之后的比特(1,9,5,13,2,10,6,14,3,11,7,15,4,12,8,16)。这样就保证了接收端设备在解交织之后，每一个分组编码比特之中，都至少有一部分是非冲突的比特，进而利用编码的冗余性能够成功解码接收到的数据。在其它信道重叠比例下，自适应交织的方法类似，为避免重复，在此不再赘述。
可选地，作为另一实施例，在根据信道中接收信号的能量，确定信道的重叠比例之前，先通过时域检测，确定信道中接收信号的能量。若接收信号的能量大于预设的阈值，确定信道繁忙。当信道繁忙时，根据信道中接收信号的能量，确定信道的重叠比例。
图10是本发明另一实施例的无线通信的方法的示意性流程图。下面将结合图10所示具体的例子详细描述本发明实施例。应注意，这些例子只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。
1001，准备发送数据时进行时域检测。
1002，判断信道是否空闲，若信道空闲进入步骤1003，反之进入步骤1004。
例如，在发送端设备准备发送数据时，发送端设备的MAC检测和接入模块先进行时域检测，确定当前信道中的忙闲情况，再决定是否接入信道进行数据传输。具体地可以先通过时域检测确定当前信道中接收信号的能量，如果接收信号的能量大于预设的阈值，便确定当前信道繁忙，反之信道空闲。
1003，在信道空闲时，退避后发送数据。
例如，在确定信道空闲时，接收端设备先进行退避，再进行数据传输，也即向接收端设备发送数据。
1004，在信道繁忙时，确定当前信道的重叠比例1/P。
例如，在信道繁忙时，发送端设备可以对时域检测结果(信道中接收信号的能量)做频域分析，实时的确定当前信道的重叠比例1/P，以决定是否接入信道进行并行传输。具体的频域分析方法可以参照前文描述的方法，为避免重复，在此不再赘述。
1005，判断重叠比例1/P是否小于3/4，小于时进入步骤1007，反之进入步骤1006。
例如，设定阈值3/4，判断1/P是否小于3/4。当1/P<3/4时，可以认为可以进行本次数据传输，反之认为不能进行本次数据传输。
1006，进行二次退避。
例如，发送端设备进行二次退避，同时转入步骤1001，再次进行时域检测，以确定当前信道中接收信号的能量。
1007，退避并发送自适应帧。
例如，发送端设备退避后发送自适应帧，以通知周围的通信设备，以保护当前系统中正在进行的数据传输。
1008，自适应交织。
例如，发送端设备根据当前信道的重叠比例，对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
1009，向接收端设备发送数据。
这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成 功对接收到的数据进行解码。
图11本发明另一实施例的无线通信的方法的示意性流程图。图11的方法可以由本次通信过程中的接收端设备执行。如图1中示出的AP 102或STA(103a，103b，103c)。
1101，从发送端设备接收调制数据，将调制数据解调，得到解调后的数据。
1102，获取调制数据的自适应交织信息，自适应交织信息与信道的重叠比例对应。
1103，根据自适应交织信息，将解调后的数据解交织，得到解交织后的编码比特。
例如，从发送端设备接收到数据后，先将接收到的数据解调，得到解调后的数据。然后，根据自适应交织信息，将解调后的数据解交织，得到解交织后的编码比特。
1104，将解交织后的编码比特解码。
例如，将前述方法解交织后的编码比特进行解码。由于信道的重叠部分引起的冲突是随机化的，接收端可以成功译码解交织后的编码比特。
基于上述技术方案，在进行数据传输之前，发送端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，获取调制数据的自适应交织信息时，从调制数据的前导，获取自适应交织信息。
例如，发送端设备将自适应交织信息通过数据的前导字段发送给接收端设备。接收端设备从发送端设备接收到数据之后，从前导字段获取自适应交织信息。
可选地，作为另一实施例，将解交织后的编码比特解码时，先根据导频信号，消除导频信号对编码比特的干扰，然后，对消除干扰后的编码比特进行解码。
例如，可以在接收端设备侧设置导频辅助解码模块，来实现利用已知的导频信号辅助后续的解码。接收端设备可以根据信道的重叠比例推测出干扰 信号中导频子载波与自身传输的哪一个数据子载波重叠，然后将已知的导频子载波上的当作干扰进行消除，获得数据子载波上的自身的数据。最后，再进行后续的均衡和解码。如图4所示，传输2是接收端设备需要的数据，而传输1是并行信道上其它用户的数据。在传输1的导频子载波
Figure PCTCN2014094605-appb-000028
和传输2的数据子载波
Figure PCTCN2014094605-appb-000029
重叠的位置，接收到的数据y可以表示为公式(5)：
Figure PCTCN2014094605-appb-000030
其中，ht表示传输1所在信道的信道冲击响应向量，nt表示表示传输1所在信道的白噪声，hi表示传输2所在信道的冲击响应向量，ni表示表示传输2所在信道的白噪声。
这样，接收端设备需要获得的数据
Figure PCTCN2014094605-appb-000031
可以表示为公式(6)：
Figure PCTCN2014094605-appb-000032
由于传输1的导频子载波
Figure PCTCN2014094605-appb-000033
是已知的，因而可以带入公式(6)将其消除，从而获得传输2的数据子载波上的数据
Figure PCTCN2014094605-appb-000034
也即消除了导频信号对编码比特的干扰。这样，本发明实施例能够进一步提高解码成功率。
可选地，作为另一实施例，将解交织后的编码比特解码时，可以先确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性。然后，将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
例如，通常情况下，位于信道重叠部分干扰频段的数据有着较低的可靠性，而位于非干扰频段的数据有着比较高的可靠性。接收端设备可以给不同的数据赋予不同的权重，以此最大化的利用可靠的数据进行解码，而从不可靠的数据中提取出有用的信息。这样，本发明实施例能够进一步提高解码成功率。
应理解，信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性，是相对而言的，对于具体的权重大小本发明实施例不做限定。
可选地，作为另一实施例，在基于权重对解交织后的编码比特进行解码时，根据以下公式(7)确定估计值的码距d：
Figure PCTCN2014094605-appb-000035
然后，比较各个估计值得码距，将其中码距最小的估计值作为最终的解 码结果。其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000036
表示mi′经过编码调制后的数据，N表示数据块的数量。
可选地，作为另一实施例，根据以下公式(8)确定权重w(i)，
Figure PCTCN2014094605-appb-000037
其中，
Figure PCTCN2014094605-appb-000038
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
图12是本发明一个实施例的通信设备的示意性框图。图12所示的通信设备为本次通信过程中的接收端设备。如图1中示出的AP 102或STA(103a，103b，103c)。通信设备120包括确定单元1201、发送单元1202、接收单元1203、解交织单元1204和解码单元1205。
确定单元1201，用于根据信道中接收信号的能量，确定信道的重叠比例。
例如，WLAN系统可以将无线通信资源划分为多个与邻近频段的信道部分重叠的信道。根据邻近频段的信道的使用情况，通信设备当前可用的信道可能会不与其它信道重叠或者与其它信道有不同的重叠比例。这种情况下，在准备与发送端设备进行通信时，接收端设备先检测确定当前信道中接收信号的能量。然后，根据接收信号的能量，确定当前信道的重叠比例。
发送单元1202，用于向发送端设备发送指示信息，指示信息用于指示发送端设备在重叠比例时发送数据所使用的自适应交织方法。
例如，指示信息包括信道的重叠比例。这种情况下，接收端设备与发送端设备可以预先约定各信道重叠比例时所使用的自适应交织方法。这样，在确定信道重叠比例之后，接收端设备直接将重叠比例发送给发送端设备。发送端设备获知重叠比例后，根据该重叠比例对应的自适应交织方法对编码比特进行交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
应理解，指示信息也可以直接携带自适应交织方法的索引号。例如，接收端设备与发送端设备预先约定各信道重叠比例时所使用的自适应交织方法，并为每一种自适应交织方法分配一个索引号。这种情况下，接收端设备可以直接根据当前信道的重叠比例，向发送端设备发送对应的自适应交织方法的索引号。这样，发送端设备根据索引号对编码比特进行自适应交织，使 信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能成功对接收到的数据进行正确解码。本发明实施例的保护范围并不限于此，其它等价变换的实现方式都应落在本发明实施例的保护范围内。
接收单元1203，用于在信道从发送端设备接收数据。
解调单元1204，用于将数据解调，得到解调后的数据；
解交织单元1205，用于根据自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特。
例如，从发送端设备接收到数据后，先将接收到的数据解调，得到解调后的数据。然后，根据指示信息指示的自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特。
解码单元1206，用于将解交织后的编码比特解码。
例如，将前述方法解交织后的编码比特进行解码。由于信道的重叠部分引起的冲突是随机化的，接收端可以成功译码解交织后的编码比特。
基于上述技术方案，在进行数据传输之前，接收端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，确定单元1201具体用于，根据信道中接收信号的能量，确定信道的能量谱，然后根据能量谱，确定信道的重叠比例。
不同的信道重叠比例下，能量谱具有不同的分布。图3分别示出了4种信道重叠比例下的能量谱，分别是1/4、1/2、3/4和完全重叠。应理解这4个例子只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。
例如，可以在接收端设备侧设置媒体接入控制(英文：Media Access Control，简称：MAC)检测和接入模块，该模块利用时域检测和频域两步分析，实时的判断当前信道重叠比例，以决定是否接入信道进行并行传输。在需要进行数据传输时，接收端设备可以先进行信道能量检测，确定当前信道中接收信号的能量。然后，进入频域分析，将接收信号的能量和频率分别进行规格化，得到能量谱。最后，将当前信道的能量谱与图3中的4个能量谱进行比较，确定最接近的能量谱对应的重叠比例为当前信道的重叠比例。
可选地，作为另一实施例，解码单元1206具体用于，根据导频信号，消除导频信号对编码比特的干扰，然后对消除干扰后的编码比特进行解码。
例如，可以在接收端设备侧设置导频辅助解码模块，来实现利用已知的导频信号辅助后续的解码。接收端设备可以根据信道的重叠比例推测出干扰信号中导频子载波与自身传输的哪一个数据子载波重叠，然后将已知的导频子载波上的当作干扰进行消除，获得数据子载波上的自身的数据。最后，再进行后续的均衡和解码。图4是本发明实施例的消除干扰的示意图。如图4所示，传输2是接收端设备需要的数据，而传输1是并行信道上其它用户的数据。在传输1的导频子载波
Figure PCTCN2014094605-appb-000039
和传输2的数据子载波
Figure PCTCN2014094605-appb-000040
重叠的位置，接收到的数据y可以表示为公式(9)：
Figure PCTCN2014094605-appb-000041
其中，ht表示传输1所在信道的信道冲击响应向量，nt表示表示传输1所在信道的白噪声，hi表示传输2所在信道的冲击响应向量，ni表示表示传输2所在信道的白噪声。
这样，接收端设备需要获得的数据
Figure PCTCN2014094605-appb-000042
可以表示为公式(10)：
Figure PCTCN2014094605-appb-000043
由于传输1的导频子载波
Figure PCTCN2014094605-appb-000044
是已知的，因而可以带入公式(10)将其消除，从而获得传输2的数据子载波上的数据
Figure PCTCN2014094605-appb-000045
也即消除了导频信号对编码比特的干扰。这样，本发明实施例能够进一步提高解码成功率。
可选地，作为另一实施例，解码单元1206具体用于，确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性。然后，将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
例如，通常情况下，位于信道重叠部分干扰频段的数据有着较低的可靠性，而位于非干扰频段的数据有着比较高的可靠性。接收端设备可以给不同的数据赋予不同的权重，以此最大化的利用可靠的数据进行解码，而从不可靠的数据中提取出有用的信息。这样，本发明实施例能够进一步提高解码成功率。
应理解，信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性，是相对而言的，对于具体的权重大小本发明实 施例不做限定。
可选地，作为另一实施例，解码单元1206具体用于，在基于权重对解交织后的编码比特进行解码时，根据以下公式(11)确定估计值的码距d：
Figure PCTCN2014094605-appb-000046
然后，比较各个估计值得码距，将其中码距最小的估计值作为最终的解码结果。其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000047
表示mi′经过编码调制后的数据，N表示数据块的数量。
可选地，作为另一实施例，解码单元1206具体用于，根据以下公式(12)确定权重w(i)：
Figure PCTCN2014094605-appb-000048
其中，
Figure PCTCN2014094605-appb-000049
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
可选地，作为另一实施例，确定单元1201还用于，通过时域检测，确定信道中接收信号的能量。若接收信号的能量大于预设的阈值，确定信道繁忙。当信道繁忙时，再根据信道中接收信号的能量，确定信道的重叠比例。
图13是本发明另一实施例的通信设备的示意性框图。图13所示的通信设备为本次通信过程中的发送端设备。如图1中示出的AP 102或STA(103a，103b，103c)。通信设备130包括接收单元1301、交织单元1302、调制单元1303和发送单元1304。
接收单元1301，用于从接收端设备接收指示信息，指示信息用于指示在信道特定重叠比例时使用的自适应交织方法。
例如，指示信息包括信道的重叠比例。这种情况下，接收端设备与发送端设备可以预先约定各信道重叠比例时所使用的自适应交织方法。这样，在确定信道重叠比例之后，接收端设备直接将重叠比例发送给发送端设备。
应理解，指示信息也可以直接携带自适应交织方法的索引号。例如，接收端设备与发送端设备预先约定各信道重叠比例时所使用的自适应交织方法，并为每一种自适应交织方法分配一个索引号。这种情况下，接收端设备可以直接根据当前信道的重叠比例，向发送端设备发送对应的自适应交织方法的索引号。本发明实施例的保护范围并不限于此，其它等价变换的实现方 式都应落在本发明实施例的保护范围内。
交织单元1302，用于根据指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特。
例如，指示信息包括重叠比例。发送端设备获知重叠比例后，根据该重叠比例对应的自适应交织方法对编码比特进行交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
又如，指示信息包括自适应交织方法的索引号，发送端设备根据索引号对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能成功对接收到的数据进行正确解码。
调制单元1303，用于将交织比特进行调制，得到调制数据。
发送单元1304，用于经由信道向接收端设备发送调制数据。
基于上述技术方案，在进行数据传输之前，接收端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，指示信息包括信道重叠比例1/P，交织单元1302具体用于，根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组。然后，利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
图7示出了在信道1/4重叠时使用的自适应交织方法。如图7所示，假设信道带宽为20M，信道的划分间隔为5M，那么将编码比特分为4组G1,G2,G3,G4。其中G4组的编码比特(13,14,15,16)对应于信道的重叠部分，也即是冲突比特。利用分组交织器将G4组的编码比特(13,14,15,16)均匀打散至全部编码比特中，使冲突随机化，得到交织之后的比特(1,9,5,13,2,10,6,14,3,11,7,15,4,12,8,16)。这样就保证了接收端设备在解交织之后，每一个分组编码比特之中，都至少有一部分是非冲突的比特，进而利用编码的冗余性能够成功解码接收到的数据。在其它信道重叠比例下，自适应交织的方法类似，为避免重复，在此不再赘述。
可选地，作为另一实施例，发送单元1304还用于发送自适应帧，自适 应帧用于通知周围的通信设备，以保护当前系统中正在进行的数据传输。
图14是本发明另一实施例的通信设备的示意性框图。图14所示的通信设备为本次通信过程中的发送端设备。如图1中示出的AP 102或STA(103a，103b，103c)。通信设备140包括确定单元1401、交织单元1402、调制单元1403和发送单元1404。
确定单元1401，用于根据信道中接收信号的能量，确定信道的重叠比例。
例如，WLAN系统可以将无线通信资源划分为多个与邻近频段的信道部分重叠的信道。根据邻近频段的信道的使用情况，通信设备当前可用的信道可能会不与其它信道重叠或者与其它信道有不同的重叠比例。这种情况下，在准备与接收端设备进行通信时，发送端设备先检测确定当前信道中接收信号的能量。然后，根据接收信号的能量，确定当前信道的重叠比例。
交织单元1402，用于根据重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特。
例如，发送端设备获知重叠比例后，根据该重叠比例对应的自适应交织方法对编码比特进行交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。
调制单元1403，用于将交织比特进行调制，得到调制数据。
发送单元1404，用于经由信道向接收端设备发送调制数据。
基于上述技术方案，在进行数据传输之前，发送端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，确定单元1401具体用于，根据信道中接收信号的能量，确定信道的能量谱。然后，根据能量谱，确定信道的重叠比例。
不同的信道重叠比例下，能量谱具有不同的分布。图3分别示出了4种信道重叠比例下的能量谱，分别是1/4、1/2、3/4和完全重叠。应理解这4个例子只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。
例如，可以在发送端设备侧设置媒体接入控制(英文：Media Access Control，简称：MAC)检测和接入模块，该模块利用时域检测和频域两步 分析，实时的判断当前信道重叠比例，以决定是否接入信道进行并行传输。在需要进行数据传输时，发送端设备可以先进行信道能量检测，确定当前信道中接收信号的能量。然后，进入频域分析，将接收信号的能量和频率分别进行规格化，得到能量谱。最后，将当前信道的能量谱与图3中的4个能量谱进行比较，确定最接近的能量谱对应的重叠比例为当前信道的重叠比例。
可选地，作为另一实施例，重叠比例为1/P。交织单元1402具体用于，根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组。然后，利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
如图7所示，假设信道带宽为20M，信道的划分间隔为5M，那么将编码比特分为4组G1,G2,G3,G4。其中G4组的编码比特(13,14,15,16)对应于信道的重叠部分，也即是冲突比特。利用分组交织器将G4组的编码比特(13,14,15,16)均匀打散至全部编码比特中，使冲突随机化，得到交织之后的比特(1,9,5,13,2,10,6,14,3,11,7,15,4,12,8,16)。这样就保证了接收端设备在解交织之后，每一个分组编码比特之中，都至少有一部分是非冲突的比特，进而利用编码的冗余性能够成功解码接收到的数据。在其它信道重叠比例下，自适应交织的方法类似，为避免重复，在此不再赘述。
可选地，作为另一实施例，确定单元1401还用于，通过时域检测，确定信道中接收信号的能量。若接收信号的能量大于预设的阈值，确定信道繁忙。当信道繁忙时，再根据信道中接收信号的能量，确定信道的重叠比例。
图15是本发明另一实施例的通信设备的示意性框图。图15所示的通信设备为本次通信过程中的接收端设备。如图1中示出的AP 102或STA(103a，103b，103c)。通信设备150包括接收单元1501、解调单元1502、获取单元1503、解交织单元1504和解码单元1505。
接收单元1501，用于从发送端设备接收调制数据。
解调单元1502，用于将调制数据解调，得到解调后的数据。
获取单元1503，用于获取调制数据的自适应交织信息，自适应交织信息与信道的重叠比例对应。
解交织单元1504，用于根据自适应交织信息，将解调后的数据解交织，得到解交织后的编码比特。
解码单元1505，用于将解交织后的编码比特解码。
基于上述技术方案，在进行数据传输之前，发送端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，获取单元1503具体用于，从调制数据的前导，获取自适应交织信息。
例如，发送端设备将自适应交织信息通过数据的前导字段发送给接收端设备。接收端设备从发送端设备接收到数据之后，从前导字段获取自适应交织信息。
可选地，作为另一实施例，解码单元1505具体用于，根据导频信号，消除导频信号对编码比特的干扰。然后，对消除干扰后的编码比特进行解码。
例如，可以在接收端设备侧设置导频辅助解码模块，来实现利用已知的导频信号辅助后续的解码。接收端设备可以根据信道的重叠比例推测出干扰信号中导频子载波与自身传输的哪一个数据子载波重叠，然后将已知的导频子载波上的当作干扰进行消除，获得数据子载波上的自身的数据。最后，再进行后续的均衡和解码。如图4所示，传输2是接收端设备需要的数据，而传输1是并行信道上其它用户的数据。在传输1的导频子载波
Figure PCTCN2014094605-appb-000050
和传输2的数据子载波
Figure PCTCN2014094605-appb-000051
重叠的位置，接收到的数据y可以表示为公式(13)：
Figure PCTCN2014094605-appb-000052
其中，ht表示传输1所在信道的信道冲击响应向量，nt表示表示传输1所在信道的白噪声，hi表示传输2所在信道的冲击响应向量，ni表示表示传输2所在信道的白噪声。
这样，接收端设备需要获得的数据
Figure PCTCN2014094605-appb-000053
可以表示为公式(14)：
Figure PCTCN2014094605-appb-000054
由于传输1的导频子载波
Figure PCTCN2014094605-appb-000055
是已知的，因而可以带入公式(14)将其消除，从而获得传输2的数据子载波上的数据
Figure PCTCN2014094605-appb-000056
也即消除了导频信号对编码比特的干扰。这样，本发明实施例能够进一步提高解码成功率。
可选地，作为另一实施例，解码单元1505具体用于，确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠 性。然后，将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
例如，通常情况下，位于信道重叠部分干扰频段的数据有着较低的可靠性，而位于非干扰频段的数据有着比较高的可靠性。接收端设备可以给不同的数据赋予不同的权重，以此最大化的利用可靠的数据进行解码，而从不可靠的数据中提取出有用的信息。这样，本发明实施例能够进一步提高解码成功率。
应理解，信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性，是相对而言的，对于具体的权重大小本发明实施例不做限定。
可选地，作为另一实施例，解码单元1505具体用于，在基于权重对解交织后的编码比特进行解码时，根据以下公式(15)确定估计值的码距d：
Figure PCTCN2014094605-appb-000057
然后，比较各个估计值得码距，将其中码距最小的估计值作为最终的解码结果。其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000058
表示mi′经过编码调制后的数据，N表示数据块的数量。
可选地，作为另一实施例，解码单元1505具体用于，根据以下公式(16)确定权重w(i)：
Figure PCTCN2014094605-appb-000059
其中，
Figure PCTCN2014094605-appb-000060
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
图16是本发明另一实施例的通信设备的示意性框图。
图16的通信设备160可用于实现上述方法实施例中各步骤及方法。图16的实施例中，通信设备160包括天线1601、发射机1602、接收机1603、处理器1604和存储器1605。处理器1604控制通信设备160的操作，并可用于处理信号。存储器1605可以包括只读存储器和随机存取存储器，并向处理器1604提供指令和数据。发射机1602和接收机1603可以耦合到天线1601。通信设备160的各个组件通过总线系统1606耦合在一起，其中总线系统1606除包括数据总线之外，还包括电源总线、控制总线和状态信号总 线。但是为了清楚说明起见，在图中将各种总线都标为总线系统1606。例如，通信设备160为接收端设备，如图1中示出的AP 102或STA(103a，103b，103c)。
具体地，存储器1605可存储使得处理器1604执行以下过程的指令：
根据信道中接收信号的能量，确定信道的重叠比例；
向发送端设备发送指示信息，指示信息用于指示发送端设备在重叠比例时发送数据所使用的自适应交织方法；
在信道从发送端设备接收数据，将数据解调，得到解调后的数据；
根据自适应交织方法，将解调后的数据解交织，得到解交织后的编码比特；
将解交织后的编码比特解码。
基于上述技术方案，在进行数据传输之前，接收端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，存储器1605还可存储使得处理器1604执行以下过程的指令：
根据信道中接收信号的能量，确定信道的重叠比例时，根据信道中接收信号的能量，确定信道的能量谱，然后，根据能量谱，确定信道的重叠比例。
可选地，作为另一实施例，存储器1605还可存储使得处理器1604执行以下过程的指令：
将解交织后的编码比特解码时，根据导频信号，消除导频信号对编码比特的干扰，然后，对消除干扰后的编码比特进行解码。
可选地，作为另一实施例，存储器1605还可存储使得处理器1604执行以下过程的指令：
将解交织后的编码比特解码时，确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；然后，将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
可选地，作为另一实施例，存储器1605还可存储使得处理器1604执行 以下过程的指令：
在基于权重对解交织后的编码比特进行解码时，根据以下公式(17)确定估计值的码距d，
Figure PCTCN2014094605-appb-000061
其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000062
表示mi′经过编码调制后的数据，N表示数据块的数量。
可选地，作为另一实施例，存储器1605还可存储使得处理器1604执行以下过程的指令：
根据以下公式(18)确定权重w(i)，
Figure PCTCN2014094605-appb-000063
其中，
Figure PCTCN2014094605-appb-000064
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
可选地，作为另一实施例，存储器1605还可存储使得处理器1604执行以下过程的指令：
在根据信道中接收信号的能量，确定信道的重叠比例之前，通过时域检测，确定信道中接收信号的能量；若接收信号的能量大于预设的阈值，确定信道繁忙。这种情况下，当信道繁忙时，再根据信道中接收信号的能量，确定信道的重叠比例。
图17是本发明另一实施例的通信设备的示意性框图。
图17的通信设备170可用于实现上述方法实施例中各步骤及方法。图17的实施例中，通信设备170包括天线1701、发射机1702、接收机1703、处理器1704和存储器1705。处理器1704控制通信设备170的操作，并可用于处理信号。存储器1705可以包括只读存储器和随机存取存储器，并向处理器1704提供指令和数据。发射机1702和接收机1703可以耦合到天线1701。通信设备170的各个组件通过总线系统1706耦合在一起，其中总线系统1706除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统1706。例如，通信设备170为发送端设备，如图1中示出的AP 102或STA(103a，103b，103c)。
具体地，存储器1705可存储使得处理器1704执行以下过程的指令：
从接收端设备接收指示信息，指示信息用于指示在信道特定重叠比例时使用的自适应交织方法；
根据指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特；
将交织比特进行调制，得到调制数据，并经由信道向接收端设备发送调制数据。
基于上述技术方案，在进行数据传输之前，接收端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，存储器1705可存储使得处理器1704执行以下过程的指令：
指示信息包括信道重叠比例1/P，根据指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特时，
根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组；
利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
图18是本发明另一实施例的通信设备的示意性框图。
图18的通信设备180可用于实现上述方法实施例中各步骤及方法。图18的实施例中，通信设备180包括天线1801、发射机1802、接收机1803、处理器1804和存储器1805。处理器1804控制通信设备180的操作，并可用于处理信号。存储器1805可以包括只读存储器和随机存取存储器，并向处理器1804提供指令和数据。发射机1802和接收机1803可以耦合到天线1801。通信设备180的各个组件通过总线系统1806耦合在一起，其中总线系统1806除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统1806。例如，通信设备180为发送端设备，如图1中示出的AP 102或STA(103a，103b，103c)。
具体地，存储器1805可存储使得处理器1804执行以下过程的指令：
根据信道中接收信号的能量，确定信道的重叠比例；
根据重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特；
将交织比特进行调制，得到调制数据，并经由信道向接收端设备发送调制数据。
基于上述技术方案，在进行数据传输之前，发送端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例，存储器1805还可存储使得处理器1804执行以下过程的指令：
根据信道中接收信号的能量，确定信道的重叠比例时，根据信道中接收信号的能量，确定信道的能量谱；然后，根据能量谱，确定信道的重叠比例。
可选地，作为另一实施例，存储器1805还可存储使得处理器1804执行以下过程的指令：
根据信道的划分间隔m和信道带宽M，将编码比特划分为H＝M/m组；
利用分组交织器，将H组中的信道的重叠部分对应的h＝H/P组编码比特均匀打散至H组编码比特中，得到冲突随机化的交织比特。
可选地，作为另一实施例，存储器1805还可存储使得处理器1804执行以下过程的指令：
在根据信道中接收信号的能量，确定信道的重叠比例之前，通过时域检测，确定信道中接收信号的能量；若接收信号的能量大于预设的阈值，确定信道繁忙；这这种情况下，当信道繁忙时，再根据信道中接收信号的能量，确定信道的重叠比例。
图19是本发明另一实施例的通信设备的示意性框图。
图19的通信设备190可用于实现上述方法实施例中各步骤及方法。图19的实施例中，通信设备190包括天线1901、发射机1902、接收机1903、处理器1904和存储器1905。处理器1904控制通信设备190的操作，并可用于处理信号。存储器1905可以包括只读存储器和随机存取存储器，并向处理器1904提供指令和数据。发射机1902和接收机1903可以耦合到天线 1901。通信设备190的各个组件通过总线系统1906耦合在一起，其中总线系统1906除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统1906。例如，通信设备190为接收端设备，如图1中示出的AP 102或STA(103a，103b，103c)。
具体地，存储器1905可存储使得处理器1904执行以下过程的指令：
从发送端设备接收调制数据，将调制数据解调，得到解调后的数据；
获取调制数据的自适应交织信息，自适应交织信息与信道的重叠比例对应；
根据自适应交织信息，将解调后的数据解交织，得到解交织后的编码比特；
将解交织后的编码比特解码。
基于上述技术方案，在进行数据传输之前，发送端设备先确定信道的重叠比例。这样，在进行数据传输时根据信道的重叠比例对编码比特进行自适应交织，使信道的重叠部分引起的冲突能够随机化，进而保证接收端设备能够成功对接收到的数据进行解码。因此，本发明实施例在保证了正常通信的同时能够最大化无线通信资源的利用率，进而提高了系统吞吐量。
可选地，作为一个实施例存储器1905可存储使得处理器1904执行以下过程的指令：
获取调制数据的自适应交织信息时，从调制数据的前导，获取自适应交织信息。
可选地，作为另一实施例存储器1905可存储使得处理器1904执行以下过程的指令：
将解交织后的编码比特解码时，根据导频信号，消除导频信号对编码比特的干扰；然后，对消除干扰后的编码比特进行解码。
可选地，作为另一实施例存储器1905可存储使得处理器1904执行以下过程的指令：
将解交织后的编码比特解码时，先确定信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；然后，将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于权重对解交织后的编码比特进行解码。
可选地，作为另一实施例存储器1905可存储使得处理器1904执行以下过程的指令：
在基于权重对解交织后的编码比特进行解码时，根据以下公式(19)确定估计值的码距d，
Figure PCTCN2014094605-appb-000065
其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，mi′表示第i个数据块的估计值，
Figure PCTCN2014094605-appb-000066
表示mi′经过编码调制后的数据，N表示数据块的数量。
可选地，作为另一实施例存储器1905可存储使得处理器1904执行以下过程的指令：
根据以下公式(20)确定权重w(i)，
Figure PCTCN2014094605-appb-000067
其中，
Figure PCTCN2014094605-appb-000068
表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
应理解，在本发明的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可 以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取存储器(英文：Random Access Memory，简称：RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (38)

  1. 一种无线通信的方法，其特征在于，所述方法包括：
    根据信道中接收信号的能量，确定所述信道的重叠比例；
    向发送端设备发送指示信息，所述指示信息用于指示所述发送端设备在所述重叠比例时发送数据所使用的自适应交织方法；
    在所述信道从所述发送端设备接收所述数据，将所述数据解调，得到解调后的数据；
    根据所述自适应交织方法，将所述解调后的数据解交织，得到解交织后的编码比特；
    将所述解交织后的编码比特解码。
  2. 根据权利要求1所述的方法，其特征在于，所述根据信道中接收信号的能量，确定所述信道的重叠比例，包括：
    根据所述信道中接收信号的能量，确定所述信道的能量谱；
    根据所述能量谱，确定所述信道的重叠比例。
  3. 根据权利要求1或2所述的方法，其特征在于，所述将所述解交织后的编码比特解码，包括：
    根据导频信号，消除所述导频信号对编码比特的干扰；
    对消除干扰后的编码比特进行解码。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述将所述解交织后的编码比特解码，包括：
    确定所述信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
    将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于所述权重对所述解交织后的编码比特进行解码。
  5. 根据权利要求4所述的方法，其特征在于，所述基于所述权重对所述解交织后的编码比特进行解码，包括：
    在基于所述权重对所述解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
    Figure PCTCN2014094605-appb-100001
    其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表 示信道冲击响应向量，m′i表示第i个数据块的估计值，
    Figure PCTCN2014094605-appb-100002
    表示m′i经过编码调制后的数据，N表示数据块的数量。
  6. 根据权利要求5所述的方法，其特征在于，
    根据以下公式确定权重w(i)，
    Figure PCTCN2014094605-appb-100003
    其中，
    Figure PCTCN2014094605-appb-100004
    表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，在所述根据信道中接收信号的能量，确定所述信道的重叠比例之前，所述方法还包括：
    通过时域检测，确定所述信道中接收信号的能量；
    若所述接收信号的能量大于预设的阈值，确定所述信道繁忙；
    所述根据信道中接收信号的能量，确定所述信道的重叠比例，包括：
    当所述信道繁忙时，根据信道中接收信号的能量，确定所述信道的重叠比例。
  8. 一种无线通信的方法，其特征在于，所述方法包括：
    从接收端设备接收指示信息，所述指示信息用于指示在信道特定重叠比例时使用的自适应交织方法；
    根据所述指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特；
    将所述交织比特进行调制，得到调制数据，并经由所述信道向所述接收端设备发送所述调制数据。
  9. 根据权利要求8所述的方法，其特征在于，所述指示信息包括信道重叠比例1/P，所述根据所述指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特，包括：
    根据信道的划分间隔m和信道带宽M，将所述编码比特划分为H＝M/m组；
    利用分组交织器，将所述H组中的所述信道的重叠部分对应的h＝H/P组编码比特均匀打散至所述H组编码比特中，得到冲突随机化的交织比特。
  10. 一种无线通信的方法，其特征在于，所述方法包括：
    根据信道中接收信号的能量，确定所述信道的重叠比例；
    根据所述重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特；
    将所述交织比特进行调制，得到调制数据，并经由所述信道向接收端设备发送所述调制数据。
  11. 根据权利要求10所述的方法，其特征在于，所述根据信道中接收信号的能量，确定所述信道的重叠比例，包括：
    根据所述信道中接收信号的能量，确定所述信道的能量谱；
    根据所述能量谱，确定所述信道的重叠比例。
  12. 根据权利要求10或11所述的方法，其特征在于，所述重叠比例为1/P，所述根据所述重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特，包括：
    根据信道的划分间隔m和信道带宽M，将所述编码比特划分为H＝M/m组；
    利用分组交织器，将所述H组中的所述信道的重叠部分对应的h＝H/P组编码比特均匀打散至所述H组编码比特中，得到冲突随机化的交织比特。
  13. 根据权利要求10至12中任一项所述的方法，其特征在于，在所述根据信道中接收信号的能量，确定所述信道的重叠比例之前，所述方法还包括：
    通过时域检测，确定所述信道中接收信号的能量；
    若所述接收信号的能量大于预设的阈值，确定所述信道繁忙；
    所述根据信道中接收信号的能量，确定所述信道的重叠比例，包括：
    当所述信道繁忙时，根据信道中接收信号的能量，确定所述信道的重叠比例。
  14. 一种无线通信的方法，其特征在于，所述方法包括：
    从发送端设备接收调制数据，将所述调制数据解调，得到解调后的数据；
    获取所述调制数据的自适应交织信息，所述自适应交织信息与信道的重叠比例对应；
    根据所述自适应交织信息，将所述解调后的数据解交织，得到解交织后的编码比特；
    将所述解交织后的编码比特解码。
  15. 根据权利要求14所述的方法，其特征在于，所述获取所述调制数 据的自适应交织信息，包括：
    从所述调制数据的前导，获取所述自适应交织信息。
  16. 根据权利要求14或15所述的方法，其特征在于，所述将所述解交织后的编码比特解码，包括：
    根据导频信号，消除所述导频信号对编码比特的干扰；
    对消除干扰后的编码比特进行解码。
  17. 根据权利要求14至16中任一项所述的方法，其特征在于，所述将所述解交织后的编码比特解码，包括：
    确定所述信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
    将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于所述权重对所述解交织后的编码比特进行解码。
  18. 根据权利要求17所述的方法，其特征在于，所述基于所述权重对所述解交织后的编码比特进行解码，包括：
    在基于所述权重对所述解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
    Figure PCTCN2014094605-appb-100005
    其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，m′i表示第i个数据块的估计值，
    Figure PCTCN2014094605-appb-100006
    表示m′i经过编码调制后的数据，N表示数据块的数量。
  19. 根据权利要求18所述的方法，其特征在于，
    根据以下公式确定权重w(i)，
    Figure PCTCN2014094605-appb-100007
    其中，
    Figure PCTCN2014094605-appb-100008
    表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
  20. 一种通信设备，其特征在于，所述通信设备包括：
    确定单元，用于根据信道中接收信号的能量，确定所述信道的重叠比例；
    发送单元，用于向发送端设备发送指示信息，所述指示信息用于指示所述发送端设备在所述重叠比例时发送数据所使用的自适应交织方法；
    接收单元，用于在所述信道从所述发送端设备接收所述数据；
    解调单元，用于将所述数据解调，得到解调后的数据；
    解交织单元，用于根据所述自适应交织方法，将所述解调后的数据解交织，得到解交织后的编码比特；
    解码单元，用于将所述解交织后的编码比特解码。
  21. 根据权利要求20所述的通信设备，其特征在于，所述确定单元具体用于，
    根据所述信道中接收信号的能量，确定所述信道的能量谱；
    根据所述能量谱，确定所述信道的重叠比例。
  22. 根据权利要求20或21所述的通信设备，其特征在于，所述解码单元具体用于，
    根据导频信号，消除所述导频信号对编码比特的干扰；
    对消除干扰后的编码比特进行解码。
  23. 根据权利要求20至22中任一项所述的通信设备，其特征在于，所述解码单元具体用于，
    确定所述信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
    将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的权重，并基于所述权重对所述解交织后的编码比特进行解码。
  24. 根据权利要求23所述的通信设备，其特征在于，所述解码单元具体用于，
    在基于所述权重对所述解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
    Figure PCTCN2014094605-appb-100009
    其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，m′i表示第i个数据块的估计值，
    Figure PCTCN2014094605-appb-100010
    表示m′i经过编码调制后的数据，N表示数据块的数量。
  25. 根据权利要求24所述的通信设备，其特征在于，所述解码单元具体用于，
    根据以下公式确定权重w(i)，
    Figure PCTCN2014094605-appb-100011
    其中，
    Figure PCTCN2014094605-appb-100012
    表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
  26. 根据权利要求20至25中任一项所述的通信设备，其特征在于，所述确定单元还用于，
    通过时域检测，确定所述信道中接收信号的能量；
    若所述接收信号的能量大于预设的阈值，确定所述信道繁忙；
    当所述信道繁忙时，根据信道中接收信号的能量，确定所述信道的重叠比例。
  27. 一种通信设备，其特征在于，所述通信设备包括：
    接收单元，用于从接收端设备接收指示信息，所述指示信息用于指示在信道特定重叠比例时使用的自适应交织方法；
    交织单元，用于根据所述指示信息指示的自适应交织方法，将编码比特进行自适应交织，得到冲突随机化的交织比特；
    调制单元，用于将所述交织比特进行调制，得到调制数据；
    发送单元，用于经由所述信道向所述接收端设备发送所述调制数据。
  28. 根据权利要求27所述的通信设备，其特征在于，所述指示信息包括信道重叠比例1/P，所述交织单元具体用于，
    根据信道的划分间隔m和信道带宽M，将所述编码比特划分为H＝M/m组；
    利用分组交织器，将所述H组中的所述信道的重叠部分对应的h＝H/P组编码比特均匀打散至所述H组编码比特中，得到冲突随机化的交织比特。
  29. 一种通信设备，其特征在于，所述通信设备包括：
    确定单元，用于根据信道中接收信号的能量，确定所述信道的重叠比例；
    交织单元，用于根据所述重叠比例，将编码比特进行自适应交织，得到冲突随机化的交织比特；
    调制单元，用于将所述交织比特进行调制，得到调制数据；
    发送单元，用于经由所述信道向接收端设备发送所述调制数据。
  30. 根据权利要求29所述的通信设备，其特征在于，所述确定单元具体用于，
    根据所述信道中接收信号的能量，确定所述信道的能量谱；
    根据所述能量谱，确定所述信道的重叠比例。
  31. 根据权利要求29或30所述的通信设备，其特征在于，所述重叠比例为1/P，所述交织单元具体用于，
    根据信道的划分间隔m和信道带宽M，将所述编码比特划分为H＝M/m组；
    利用分组交织器，将所述H组中的所述信道的重叠部分对应的h＝H/P组编码比特均匀打散至所述H组编码比特中，得到冲突随机化的交织比特。
  32. 根据权利要求29至31中任一项所述的通信设备，其特征在于，所述确定单元还用于，
    通过时域检测，确定所述信道中接收信号的能量；
    若所述接收信号的能量大于预设的阈值，确定所述信道繁忙；
    当所述信道繁忙时，根据信道中接收信号的能量，确定所述信道的重叠比例。
  33. 一种通信设备，其特征在于，所述通信设备包括：
    接收单元，用于从发送端设备接收调制数据；
    解调单元，用于将所述调制数据解调，得到解调后的数据；
    获取单元，用于获取所述调制数据的自适应交织信息，所述自适应交织信息与信道的重叠比例对应；
    解交织单元，用于根据所述自适应交织信息，将所述解调后的数据解交织，得到解交织后的编码比特；
    解码单元，用于将所述解交织后的编码比特解码。
  34. 根据权利要求33所述的通信设备，其特征在于，所述获取单元具体用于，从所述调制数据的前导，获取所述自适应交织信息。
  35. 根据权利要求33或34所述的通信设备，其特征在于，所述解码单元具体用于，
    根据导频信号，消除所述导频信号对编码比特的干扰；
    对消除干扰后的编码比特进行解码。
  36. 根据权利要求33至35中任一项所述的通信设备，其特征在于，所述解码单元具体用于，
    确定所述信道的重叠部分对应的编码比特的可靠性为低可靠性，其余编码比特的可靠性为高可靠性；
    将低可靠性的编码比特赋予小的权重，将高可靠性的编码比特赋予大的 权重，并基于所述权重对所述解交织后的编码比特进行解码。
  37. 根据权利要求36所述的通信设备，其特征在于，所述解码单元具体用于，
    在基于所述权重对所述解交织后的编码比特进行解码时，根据以下公式确定估计值的码距d，
    Figure PCTCN2014094605-appb-100013
    其中，y(i)表示解交织后的编码比特，w(i)表示赋予y(i)的权重，ht(i)表示信道冲击响应向量，m′i表示第i个数据块的估计值，
    Figure PCTCN2014094605-appb-100014
    表示m′i经过编码调制后的数据，N表示数据块的数量。
  38. 根据权利要求37所述的通信设备，其特征在于，所述解码单元具体用于，
    根据以下公式确定权重w(i)，
    Figure PCTCN2014094605-appb-100015
    其中，
    Figure PCTCN2014094605-appb-100016
    表示信道非重叠部分对应的噪声能量，Phin表示信道重叠部分对应的冲突能量。
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