CN104954059A - Method for receiving multiple channel signals and device thereof - Google Patents

Method for receiving multiple channel signals and device thereof Download PDF

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Publication number
CN104954059A
CN104954059A CN201410127492.0A CN201410127492A CN104954059A CN 104954059 A CN104954059 A CN 104954059A CN 201410127492 A CN201410127492 A CN 201410127492A CN 104954059 A CN104954059 A CN 104954059A
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China
Prior art keywords
channel
reception antenna
transmission path
signal
strength
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程健
徐鑫昌
黄小林
倪海峰
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Shenzhen ZTE Microelectronics Technology Co Ltd
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Shenzhen ZTE Microelectronics Technology Co Ltd
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Priority to CN201410127492.0A priority Critical patent/CN104954059A/en
Priority to PCT/CN2014/093621 priority patent/WO2015149538A1/en
Publication of CN104954059A publication Critical patent/CN104954059A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a method for receiving multiple channel signals. A receiving end measures the signal state of multiple channel signals, and a receiving channel with a poor signal state is closed according to the signal state of the multiple channel signals. The signal state comprises the receiving power of each receiving antenna and/or the channel estimation power value of the transmission path of each receiving signal. At the same time the invention also provides a receiving device of multiple channel signals.

Description

The method of reseptance of multi channel signals and device
Technical field
The present invention relates to the multi channel signals transmission technology of multiple-input and multiple-output, particularly relate to a kind of method of reseptance and device of multi channel signals.
Background technology
Multiple-input and multiple-output (MIMO) system is all widely used in the cdma system of 3G and the ofdm system of 4G; The data that mimo system refers to transmission end of base station by Space Time Coding or separately independent data stream mode through multiple transmission antennas transmit, carry out transfer of data to receiving terminal; Receiving terminal adopts and the transmission same quantity of transmitting antenna or the reception antenna exceeding number of transmission antennas, carries out multichannel diversity reception to the signal that transmission end of base station sends.
Broad sense mimo system, can be divided into single-shot many receipts SIMO system, multiple illuminators and single receiver system MISO, and the MIMO mimo system of general significance; In SIMO system, receive generally adopts diversity reception mode to improve the received signal to noise ratio of system more; In MISO system, transmitting terminal generally adopts Space Time Coding diversity transmission mode, also can improve received signal to noise ratio; In MIMO mimo system, can be independent multi-emitting passage and diversity reception mode, joint transmit diversity and receive diversity mode also can be adopted to promote receptivity.
The shortcoming of current mimo system receives process relative complex, the especially communication system of large bandwidth.Summary of the invention
For solving the technical problem of existing existence, the invention provides a kind of method of reseptance and device of multi channel signals.
Technical scheme of the present invention is achieved in that
The method of reseptance of a kind of multi channel signals provided by the invention, the method comprises:
Receiving terminal measures the signal condition of multi channel signals, according to the receive path of the signal condition shutdown signal state difference of multi channel signals; Described signal condition comprises the channel estimation power value of the received power of each reception antenna and/or the transmission path of each Received signal strength.
In such scheme, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described signal condition is the received power of each reception antenna, receiving terminal determines the received power of each reception antenna according to the signal strength signal intensity of the Received signal strength of each reception antenna, closes the low reception antenna of received power according to the received power of each reception antenna obtained.
In such scheme, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described signal condition is the channel estimation power value of the transmission path of each Received signal strength, receiving terminal carries out channel estimating to the transmission path of each Received signal strength, measure the channel strength of the transmission path of each Received signal strength according to the channel estimation power value of the transmission path of each Received signal strength, then close the low transmission path of channel strength according to the channel strength of the transmission path of each Received signal strength.
In such scheme, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described signal condition is the channel estimation power value of the transmission path of each Received signal strength, receiving terminal carries out channel estimating to the transmission path of each Received signal strength, determine the channel strength of each reception antenna according to the channel estimation power value of the transmission path of each Received signal strength, then close the low reception antenna of channel strength according to the channel strength of each reception antenna.
In such scheme, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described receiving state signal is the channel estimation power value of the received power of each reception antenna and the transmission path of each Received signal strength, receiving terminal determines the received power of each reception antenna according to the signal strength signal intensity of the Received signal strength of each reception antenna, close the reception antenna that received power is low, afterwards channel estimating is carried out to the transmission path of each Received signal strength that the reception antenna of not closing receives, the channel strength of the transmission path of each Received signal strength is measured according to the channel estimation power value of the transmission path of each Received signal strength, close the transmission path that channel strength is low.
In such scheme, the method also comprises: after the receive path of the described signal condition shutdown signal state difference according to multi channel signals, described receiving terminal periodically opens the receive path of having closed, and determines whether the receive path continuing to close described signal condition difference according to the signal condition of the multi channel signals remeasured.
The receiving system of a kind of multi channel signals provided by the invention, this device comprises: radio frequency reception processor, analogue baseband processors, digital baseband processor; Wherein,
Described radio frequency reception processor, for being multichannel analog baseband signal by multi-channel signal processing, sends to analogue baseband processors;
Described analogue baseband processors, for described multichannel analog baseband signal is treated to multichannel digital baseband signal, sends to digital baseband processor;
Described digital baseband processor, for measuring the signal condition of the digital baseband signal of each passage, according to the receive path of the signal condition shutdown signal state difference of the digital baseband signal of each passage;
Described signal condition comprises the channel estimation power value of the transmission path of the received power of each reception antenna and/or the digital baseband signal of each passage.
In such scheme, described digital baseband processor comprises: multi-channel power detector, radio-frequency (RF) switch, wherein,
Described multi-channel power detector, the signal strength signal intensity for the digital baseband signal according to each reception antenna determines the received power of each reception antenna, closes radio-frequency (RF) switch corresponding to the low reception antenna of received power according to the received power of each reception antenna obtained;
Described radio-frequency (RF) switch, is used to open or close reception antenna.
In such scheme, described digital baseband processor comprises: multichannel estimation processor, multi-channel power detector, channel switch, wherein,
Described multichannel estimation processor, the transmission path for the digital baseband signal to each passage carries out channel estimating, and the channel estimation power value of the transmission path of the digital baseband signal of each passage is sent to multi-channel power detector;
Described multi-channel power detector, channel estimation power value for the transmission path of the digital baseband signal according to each passage measures the channel strength of the transmission path of the digital baseband signal of each passage, then closes channel switch corresponding to the low transmission path of channel strength according to the channel strength of the transmission path of the digital baseband signal of each passage;
Described channel switch, is used to open or close transmission path.
In such scheme, described digital baseband processor comprises: multichannel estimation processor, multi-channel power detector, channel switch, wherein,
Described multichannel estimation processor, the transmission path for the digital baseband signal to each passage carries out channel estimating, and the channel estimation power value of the transmission path of the digital baseband signal of each passage is sent to multi-channel power detector;
Described multi-channel power detector, the channel estimation power value for the transmission path of the digital baseband signal according to each passage determines the channel strength of each reception antenna, then closes the low reception antenna of channel strength according to the channel strength of each reception antenna.
In such scheme, described digital baseband processor comprises: multichannel estimation processor, multi-channel power detector, radio-frequency (RF) switch, channel switch, wherein,
Described multi-channel power detector, the signal strength signal intensity for the digital baseband signal according to each reception antenna determines the received power of each reception antenna, closes radio-frequency (RF) switch corresponding to the low reception antenna of received power according to the received power of each reception antenna obtained; Notify that the transmission path of multichannel estimation processor to the digital baseband signal of passage each on the reception antenna of not closing carries out channel estimating afterwards, measure the channel strength of the transmission path of the digital baseband signal of each passage according to the channel estimation power value of the transmission path of the digital baseband signal of each passage, then close channel switch corresponding to the low transmission path of channel strength according to the channel strength of the transmission path of the digital baseband signal of each passage;
Described multichannel estimation processor, transmission path for the digital baseband signal to passage each on the reception antenna of not closing carries out channel estimating, and the channel estimation power value of the transmission path of the digital baseband signal of each passage is sent to multi-channel power detector;
Described radio-frequency (RF) switch, is used to open or close reception antenna;
Described channel switch, is used to open or close transmission path.
In such scheme, described digital baseband processor, also for periodically opening the receive path of having closed, determines whether the receive path continuing to close described signal condition difference according to the signal condition of the digital baseband signal of each passage remeasured.
The invention provides a kind of method of reseptance and device of multi channel signals, receiving terminal measures the signal condition of multi channel signals, according to the receive path of the signal condition shutdown signal state difference of multi channel signals; Described signal condition comprises the channel estimation power value of the received power of each reception antenna and/or the transmission path of each Received signal strength; So, this invention simplifies the process of receiving terminal, reduce the operand of receiving terminal, thus reduce complexity and the power consumption of reception.
Accompanying drawing explanation
Fig. 1 is the structural representation of multi channel signals transmission system of the prior art;
The schematic flow sheet of the method for reseptance of a kind of multi channel signals that Fig. 2 provides for the embodiment of the present invention one;
The schematic flow sheet of the method for reseptance of a kind of multi channel signals that Fig. 3 provides for the embodiment of the present invention two;
The schematic flow sheet of the method for reseptance of a kind of multi channel signals that Fig. 4 provides for the embodiment of the present invention three;
The schematic flow sheet of the method for reseptance of a kind of multi channel signals that Fig. 5 provides for the embodiment of the present invention four;
The structural representation of the receiving system of a kind of multi channel signals that Fig. 6 provides for the embodiment of the present invention five;
The structural representation of the receiving system of a kind of multi channel signals that Fig. 7 provides for the embodiment of the present invention six;
The structural representation of the receiving system of a kind of multi channel signals that Fig. 8 provides for the embodiment of the present invention seven;
The structural representation of the receiving system of a kind of multi channel signals that Fig. 9 provides for the embodiment of the present invention eight;
The structural representation of the receiving system of a kind of multi channel signals that Figure 10 provides for the embodiment of the present invention nine;
The structural representation of the receiving system of a kind of multi channel signals that Figure 11 provides for the embodiment of the present invention ten.
In figure: 1, baseband processor; 2, radio-frequency transmissions processor; 3, radio frequency reception processor; 4, analogue baseband processors; 5, digital baseband processor; 6, radio-frequency (RF) switch; 501, multichannel estimation processor; 502, channel noise reduction processor; 503, channel switch; 504, multi channel signals detector; 505, frequency domain characteristic and velocity estimation processor; 506, multi-channel power detector.
Embodiment
In order to understanding the present invention clearly, first introduce in prior art the method for reseptance realizing multi-channel data herein, as shown in Figure 1, the multi-channel data transmission received for 22, in prior art, digital signal is after the baseband processor 1 of transmitting terminal processes, be sent to radio-frequency transmissions processor 2, form two-way transmission signal through two transmit antennas and send; On downlink reception, receiving terminal is provided with two-way independently radio frequency reception processor 3 and two-way independently analogue baseband processors 4, on radio frequency reception processor 3, carry out bandpass filtering, radio frequency amplification, carrier wave demodulation and low-pass filtering, form the analog signal of low pass, then perform after anti-aliased low-pass filtering, AD sampling through analogue baseband processors 4, form digital baseband signal, digital baseband signal gives digital baseband processor 5, and executive signal receives and measures; Like this, no matter to transmit a signal to the Received signal strength of receiving terminal strong and weak for base station side, and receiving terminal all can receive and process, and will increase the complexity of reception, and increases the power consumption of receiving terminal.
In the embodiment of the present invention, receiving terminal measures the signal condition of multi channel signals, according to the receive path of the signal condition shutdown signal state difference of multi channel signals; Described signal condition comprises the channel estimation power value of the received power of each reception antenna and/or the transmission path of each Received signal strength.
Below by drawings and the specific embodiments, the present invention is described in further detail.
Embodiment one
The embodiment of the present invention realizes a kind of method of reseptance of multi-channel data, and the method comprises: receiving terminal measures the signal condition of multi channel signals, according to the receive path of the signal condition shutdown signal state difference of multi channel signals; Described signal condition comprises the channel estimation power value of the received power of each reception antenna and/or the transmission path of each Received signal strength, and as shown in Figure 2, the method concrete steps are as follows:
Step 201: receiving terminal measures the signal condition of multi channel signals;
Wherein, when described signal condition comprises the received power of each reception antenna, the signal strength signal intensity of the Received signal strength that described receiving terminal receives according to each reception antenna determines the received power of each reception antenna;
When described signal condition comprises the channel estimation power value of the transmission path of each Received signal strength, described receiving terminal carries out channel estimating to the transmission path of the Received signal strength that each reception antenna receives, and measures the channel strength of each transmission path according to the channel estimation power value of the transmission path of each Received signal strength obtained; Meanwhile, described receiving terminal can also determine the channel strength of each reception antenna according to the channel estimation power value of the transmission path of each Received signal strength;
When described signal condition comprises the channel estimation power value of the received power of each reception antenna and the transmission path of each Received signal strength, the signal strength signal intensity of the Received signal strength that described receiving terminal receives according to each reception antenna determines the received power of each reception antenna, channel estimating is carried out to the transmission path of the Received signal strength that each reception antenna receives, measures the channel strength of each transmission path according to the channel estimation power value of the transmission path of each Received signal strength obtained.
Step 202: receiving terminal is according to the receive path of the signal condition shutdown signal state difference of multi channel signals;
Wherein, when described signal condition comprises the received power of each reception antenna, the received power of each reception antenna that described receiving terminal obtains according to step 201 closes the low reception antenna of received power;
When described signal condition comprises the channel estimation power value of the transmission path of each Received signal strength, the channel strength of each transmission path that described receiving terminal obtains according to step 201 closes the low transmission path of channel strength; Meanwhile, described receiving terminal can also close the low reception antenna of channel strength according to the channel strength of each reception antenna of step 201 acquisition;
When described signal condition comprises the channel estimation power value of the received power of each reception antenna and the transmission path of each Received signal strength, the received power of each reception antenna that described receiving terminal obtains according to step 201 closes the low reception antenna of received power; Afterwards, the channel strength obtaining each transmission path of the reception antenna of not closing according to step 201 closes the low transmission path of channel strength.
Embodiment two
The embodiment of the present invention realizes a kind of method of reseptance of multi-channel data, the method comprises: described signal condition is the received power of each reception antenna, receiving terminal determines the received power of each reception antenna according to the signal strength signal intensity of the Received signal strength of each reception antenna, the low reception antenna of received power is closed according to the received power of each reception antenna obtained, as shown in Figure 3, the method concrete steps are as follows:
Step 301: the signal strength signal intensity of the Received signal strength that receiving terminal receives according to each reception antenna determines the received power of each reception antenna;
Wherein, described receiving terminal determines the received signal strength indicator (RSSI, Received Signal Strength Indication) of every root reception antenna according to the signal strength signal intensity of the reception antenna quantity self arranged and every root reception antenna; Described RSSI represents the received power of reception antenna; The value in the decibel territory of the RSSI of described every root reception antenna is according to RSSI j, dB=10 × log 10(RSSI j) obtain, wherein, j represents the sequence number of reception antenna, and j is the natural numbers such as 1,2,3,4, RSSI j, dBrepresent the value in the decibel territory of the RSSI of jth root reception antenna, RSSI jrepresent the RSSI of jth root reception antenna, RSSI is generally the power statistic by carrying out the appropriate time cycle to the baseband signal received, and carry out automatic growth control (AGC, Automatic Gain Control) compensate obtain, usually can obtain from AGC module, know rssi measurement process for a person skilled in the art, just repeated no longer further here.
Step 302: receiving terminal closes the low reception antenna of received power according to the received power of each reception antenna obtained;
Wherein, the value in the decibel territory of the RSSI of any two reception antennas obtained contrasts by described receiving terminal, when determining that the value in the decibel territory of the RSSI of described two reception antennas at least differs the first comparison threshold according to the comparing result obtained, close the reception antenna that the value in the decibel territory of RSSI is low;
Particularly, for jth root reception antenna and kth root reception antenna, the value in the decibel territory of the RSSI of described jth root reception antenna is RSSI j, dB, the value in the decibel territory of the RSSI of described kth root reception antenna is RSSI k, dB;
Work as RSSI k, dB>=T 1+ RSSI j, dBtime, keep the kth root reception antenna that received signal strength is strong to open, close the reception antenna that received signal strength is weak, namely close described RSSI j, dBcorresponding jth root reception antenna; Described T 1be the first comparison threshold, can 10dB ~ 20dB be set to, can also adjust according to actual conditions;
Work as RSSI k, dB≤-T 1+ RSSI j, dBtime, keep the jth root reception antenna that received signal strength is strong to open, close the reception antenna that received signal strength is weak, namely close described RSSI k, dBcorresponding kth root reception antenna, described in be that the first comparison threshold gets negative value.
Described receiving terminal periodically opens the reception antenna of having closed, and according to the received power of each reception antenna remeasured, judges whether to continue to close the low reception antenna of received power.
Wherein, described receiving terminal, in fixed cycle T, is opened the reception antenna of all having closed, is re-executed step 301, to determine whether to continue to close described reception antenna; Described fixed cycle T generally determines according to the frame length of communication standard, and the frame length of such as TD-SCDMA, WCDMA, TD-LTE and LTE-FDD is all 10ms, can according to the numerical value determining T in some integral multiples of frame length, and such as, T value is 10ms ~ 5.12s; Described fixed cycle T can also determine according to the coherence time of reference channel in communication system, in such as WCDMA receiver, generally need the translational speed detecting mobile terminal, namely maximum doppler frequency, can derive the coherence time of reference channel further; Wherein, the level crossing rate (lcr) that the detection of the translational speed of described mobile terminal can cross at 0 by channel estimating adds up acquisition.
Embodiment three
The embodiment of the present invention realizes a kind of method of reseptance of multi-channel data, the method comprises: described signal condition is the channel estimation power value of the transmission path of each Received signal strength, receiving terminal carries out channel estimating to the transmission path of each Received signal strength, measure the channel strength of the transmission path of each Received signal strength according to the channel estimation power value of the transmission path of each Received signal strength, then close the low transmission path of channel strength according to the channel strength of the transmission path of each Received signal strength; As shown in Figure 4, concrete steps are as follows:
Step 401: receiving terminal carries out channel estimating to the transmission path of the Received signal strength that each reception antenna receives;
Wherein, because Received signal strength may from different communication standards, so described receiving terminal adopts diverse ways to carry out channel estimating to every road transmission path, the methods such as correlation method, equalization or associating multi-user mensuration can be adopted to carry out channel estimating, such as: for the Received signal strength from WCDMA, CPICH correlation method is used to carry out channel estimating to transmission path; For the Received signal strength from GSM, the decorrelation method of 26 frequency pilot signs in the middle of business time-slot is adopted to carry out channel estimating to transmission path; For the Received signal strength from LTE, frequency domain equalization method is adopted to carry out channel estimating to transmission path; For the Received signal strength from TD-SCDMA, leading code in time slot is adopted to carry out channel estimating to transmission path;
The received signal strength of described every root reception antenna is RSSI j, the channel estimating of the transmission path of acquisition is wherein, ij represents the transmission path from the i-th transmit antennas to jth root reception antenna, and n represents the n-th transmission paths;
Described receiving terminal obtains the channel estimation power value of every road transmission path according to the channel estimating of every road transmission path, especially by the channel estimation power value obtaining every road transmission path, wherein, the channel estimation power value of the n-th transmission paths representing from the i-th transmit antennas to jth root reception antenna.
Step 402: receiving terminal measures the channel strength of each transmission path according to the channel estimation power value of the transmission path of each Received signal strength obtained;
Wherein, the channel estimation power value of every road transmission path that described receiving terminal obtains according to step 401 measures the channel strength of described every road transmission path, and determines the channel strength of corresponding reception antenna according to the channel strength of described every road transmission path;
Particularly, for the transmission path between the i-th transmit antennas to jth root reception antenna, by and acquisition i-th transmit antennas to jth root reception antenna between the channel strength of the n-th transmission paths and the value in decibel territory of the channel strength of described transmission path, wherein, represent the channel strength of the transmission path between the i-th transmit antennas to jth root reception antenna, represent the value in the decibel territory of the channel strength of the transmission path between the i-th transmit antennas to jth root reception antenna, L bar multipath is there is L represents from the i-th transmit antennas to jth root reception antenna.
Described receiving terminal is again according to the P obtained ijdetermine the value in the channel strength of jth root reception antenna and the decibel territory of channel strength, especially by and p j, dB=10 × log 10(p j) obtain the value in the channel strength of jth root reception antenna and the decibel territory of channel strength, wherein, i represents transmitting antenna sequence number, and i=1 represents the first transmit antennas, represents the channel strength of jth root reception antenna, P j, dBrepresent the value in the decibel territory of the channel strength of jth root reception antenna.
Step 403: receiving terminal closes the low transmission path of described channel strength according to the channel strength of the transmission path of each Received signal strength obtained;
Wherein, the transmission path that described receiving terminal is low according to the value in the value closedown decibel territory in the decibel territory of the channel strength of the described every road transmission path obtained according to step 402, or the reception antenna that described receiving terminal is low according to the value in the value closedown decibel territory in the decibel territory of the channel strength of described every root reception antenna;
The value in the decibel territory of the channel strength of the transmission path that described receiving terminal obtains according to step 402, contrast the value in the decibel territory of the channel strength of any two pairs of transmission paths between transmitting antenna and reception antenna, when determining that according to the comparing result obtained the value in the decibel territory of the channel strength of described two pairs of transmission paths between transmitting antenna and reception antenna at least differs the 3rd comparison threshold, close the transmission path that the value in the decibel territory of channel strength is low;
Particularly, with i-th and h root transmitting antenna, and jth root reception antenna is example, and i-th transmitting antenna is P to the value in the decibel territory of the channel strength of the transmission path of jth root reception antenna ij, dB, h root transmitting antenna is compare P to the value in the decibel territory of the channel strength of the transmission path of jth root reception antenna ij, dBwith P hj, dBbetween relation:
At that time, close the transmission path of h root transmitting antenna to jth root reception antenna, and keep i-th transmitting antenna to open to the transmission path of jth root reception antenna; Described T 3be the 3rd comparison threshold, can 5dB ~ 15dB be set to, can also arrange according to actual conditions.
Work as p ij, dB≤-T 1+ RSSI j, dBtime, close the transmission path of i-th transmitting antenna to jth root reception antenna, keep h root transmitting antenna to open to the transmission path of jth root reception antenna; Described T 3be that the 3rd comparison threshold gets negative value.
At that time, i-th transmitting antenna is kept all to open to the transmission path of jth root reception antenna and h root transmitting antenna to the transmission path of jth root reception antenna.
Or, the channel strength P of Received signal strength on every root reception antenna that described receiving terminal obtains according to step 402 jthe value in decibel territory, contrast the value in the decibel territory of the channel strength of any two reception antennas, when determining that the value in the decibel territory of the channel strength of described two reception antennas at least differs the second comparison threshold, close the reception antenna that the value in the decibel territory of channel strength is low;
Particularly, for jth root reception antenna and kth root reception antenna, the value in the decibel territory of the channel strength of jth root reception antenna is P j, dB, the value in the decibel territory of the channel strength of kth root reception antenna is work as P j, dB>=T 2+ P k, dBtime, keep jth root reception antenna to open, close kth root reception antenna; Described T 2be the second comparison threshold, T 2can 10dB ~ 20dB be set to, also can arrange according to actual conditions.
Described receiving terminal periodically opens the transmission path or reception antenna of having closed, according to the channel strength of transmission path or the channel strength of reception antenna of each Received signal strength remeasured, judge whether to continue to close the low transmission path of channel strength or reception antenna.
Wherein, described receiving terminal is in fixed cycle T, and open the reception antenna or transmission path of all having closed, described receiving terminal re-executes step 401, to determine whether to continue to close the low reception antenna of channel strength or transmission path; Described fixed cycle T is according to the value detecting the translational speed of environment residing for receiving system, the time selectivity of channel estimating determines fixed cycle T.
Embodiment four
The embodiment of the present invention realizes a kind of method of reseptance of multi-channel data, the method comprises: described receiving state signal is the channel estimation power value of the received power of each reception antenna and the transmission path of each Received signal strength, receiving terminal determines the received power of each reception antenna according to the signal strength signal intensity of the Received signal strength of each reception antenna, close the reception antenna that received power is low, afterwards channel estimating is carried out to the transmission path of each Received signal strength that the reception antenna of not closing receives, the channel strength of the transmission path of each Received signal strength is measured according to the channel estimation power value of the transmission path of each Received signal strength, close the transmission path that channel strength is low, as shown in Figure 5, the method concrete steps are as follows:
Step 501, the signal strength signal intensity of the Received signal strength that receiving terminal receives according to each reception antenna determines the received power of each reception antenna;
Wherein, described receiving terminal determines the received signal strength indicator RSSI of every root reception antenna according to the signal strength signal intensity of the reception antenna quantity self arranged and every root reception antenna, and described RSSI represents the received power of reception antenna; The value in the decibel territory of the RSSI of described every root reception antenna is according to RSSI j, dB=10 × log 10(RSSI j) obtain, wherein, j represents the sequence number of reception antenna, and j is the natural numbers such as 1,2,3,4, RSSI j, dBrepresent the value in the decibel territory of the RSSI of jth root reception antenna, RSSI jrepresent the RSSI of jth root reception antenna, RSSI is generally the power statistic by carrying out the appropriate time cycle to the baseband signal received, and carry out AGC compensate obtain, usually can obtain from AGC module, know rssi measurement process for a person skilled in the art, just repeated no longer further here.
Step 502: receiving terminal closes the low reception antenna of received power according to the received power of each reception antenna obtained;
Wherein, first the value in the decibel territory of the RSSI of any two reception antennas obtained contrasts by described receiving terminal, when determining that the value in the decibel territory of the RSSI of described two reception antennas at least differs the second comparison threshold, close the reception antenna that the value in the decibel territory of described RSSI is low;
Particularly, for jth root reception antenna and kth root reception antenna, the value in the decibel territory of the RSSI of described jth root reception antenna is RSSI j, dB, the value in the decibel territory of the RSSI of described kth root reception antenna is RSSI k, dB;
Work as RSSI k, dB>=T 1+ RSSI j, dBtime, keep the kth root reception antenna that received signal strength is strong to open, close the reception antenna that received signal strength is weak, namely close described RSSI j, dBcorresponding jth root reception antenna; Described T 1be the first comparison threshold, can 10dB ~ 20dB be set to, can also adjust according to actual conditions.
Work as RSSI k, dB≤-T 1+ RSSI j, dBtime, keep the jth root reception antenna that received signal strength is strong to open, close the reception antenna that received signal strength is weak, namely close described RSSI k, dBcorresponding kth root reception antenna; Described-T 1be that the first comparison threshold gets negative value.
Step 503: the transmission path of receiving terminal to the Received signal strength that each reception antenna of not closing receives carries out channel estimating;
Wherein, because Received signal strength may from different communication standards, so described receiving terminal adopts diverse ways to carry out channel estimating to every road transmission path, the methods such as correlation method, equalization or associating multi-user mensuration can be adopted to carry out channel estimating, such as: for the Received signal strength from WCDMA, CPICH correlation method is used to carry out channel estimating to transmission path; For the Received signal strength from GSM, the decorrelation method of 26 frequency pilot signs in the middle of business time-slot is adopted to carry out channel estimating to transmission path; For the Received signal strength from LTE, frequency domain equalization method is adopted to carry out channel estimating to transmission path; For the Received signal strength from TD-SCDMA, leading code in time slot is adopted to carry out channel estimating to transmission path;
The received signal strength of described every root reception antenna is RSSI j, the channel estimating of the transmission path of acquisition is, wherein, ij represents the transmission path from the i-th transmit antennas to jth root reception antenna, and n represents the n-th transmission paths;
Described receiving terminal obtains the channel estimation power value of every road transmission path according to the channel estimating of every road transmission path, especially by obtain the channel estimation power value of every road transmission path, wherein, the channel estimation power value of the n-th transmission paths representing from the i-th transmit antennas to jth root reception antenna.
Step 504: receiving terminal measures the channel strength of each transmission path according to the channel estimation power value of the transmission path of each Received signal strength obtained;
Wherein, described receiving terminal is after closing the low reception antenna of received power, measure the channel strength of described transmission path according to the channel estimation power value of every road transmission path, and determine the channel strength of Received signal strength on corresponding each reception antenna according to the channel strength of each transmission path;
Particularly, for the transmission path between the i-th transmit antennas to jth root reception antenna, pass through obtain the value in the decibel territory of the channel strength of the n-th transmission paths between the i-th transmit antennas to jth root reception antenna and the channel strength of described transmission path, wherein, P ijrepresent the channel strength of the transmission path between the i-th transmit antennas to jth root reception antenna, P ij, dBrepresent the value in the decibel territory of the channel strength of the transmission path between the i-th transmit antennas to jth root reception antenna, L represents from the i-th transmit antennas to jth root reception antenna, there is L bar multipath.
Described receiving terminal is again according to the P obtained ijdetermine the value in the channel strength of jth root reception antenna and the decibel territory of channel strength, especially by obtain the value in the channel strength of jth root reception antenna and the decibel territory of channel strength, wherein, i represents transmitting antenna sequence number, and i=1 represents the first transmit antennas, P jrepresent the channel strength of jth root reception antenna, P j, dBrepresent the value in the decibel territory of the channel strength of jth root reception antenna.
Step 505: receiving terminal closes the low transmission path of channel strength according to the channel strength of the transmission path of each Received signal strength obtained;
Wherein, described receiving terminal namely works as T after closing the low reception antenna of received power 1+ RSSI j, dB>RSSI k, dB>-T 1+ RSSI j, dBtime, described receiving terminal continues the value in the decibel territory of the channel strength according to each transmission path obtained, contrast the value in the decibel territory of the channel strength of any two pairs of transmission paths between transmitting antenna and reception antenna, when determining that the value in the decibel territory of the channel strength of described two pairs of transmission paths between transmitting antenna and reception antenna at least differs the 3rd comparison threshold, the transmission path that the value in the decibel territory of the channel strength in closing transmission path is low.
Particularly, with i-th and h root transmitting antenna, and jth root reception antenna is example, and i-th transmitting antenna is P to the value in the decibel territory of the channel strength of the transmission path of jth root reception antenna ij, dB, h root transmitting antenna is P to the value in the decibel territory of the channel strength of the transmission path of jth root reception antenna hj, dB, compare P ij, dBwith P hj, dBbetween relation:
Work as P ij, dB>=T 3+ P hj, dBtime, close the transmission path of h root transmitting antenna to jth root reception antenna, keep i-th transmitting antenna to open to the transmission path of jth root reception antenna; Described T 3be the 3rd comparison threshold, can 5dB ~ 15dB be set to, can also arrange according to actual conditions.
Work as P ij, dB≤-T 3+ P hj, dBtime, close the transmission path of i-th transmitting antenna to jth root reception antenna, keep h root transmitting antenna to open to the transmission path of jth root reception antenna; Described-T 3be the 3rd comparison threshold T 3get negative value.
Work as T 3+ P hj, dB>P ij, dB>-T 3+ P hj, dBtime, keep i-th transmitting antenna all to open to the transmission path h root transmitting antenna of jth root reception antenna to the transmission path of jth root reception antenna.
Described receiving terminal periodically opens the reception antenna and transmission path of having closed, according to the received power of the reception antenna remeasured, judge whether to continue to close the low reception antenna of received power, afterwards, according to the channel strength of the transmission path remeasured, judge whether to continue the low transmission path of channel strength.
Wherein, described receiving terminal is in fixed cycle T, open the reception antenna and Base-Band Processing passage of all having closed, described receiving terminal restarts to perform step 501, to determine whether to continue to close the low reception antenna of received power and the low transmission path of channel strength; Described fixed cycle T is according to the value detecting the translational speed of environment residing for receiving system, the time selectivity of channel estimating determines fixed cycle T.
Embodiment five
The embodiment of the present invention realizes a kind of receiving system of multi-channel data, and as shown in Figure 6, this device comprises: radio frequency reception processor 3, analogue baseband processors 4, digital baseband processor 5; Wherein,
Multi-channel signal processing is multichannel analog baseband signal by described radio frequency reception processor 3, sends to analogue baseband processors 4;
Described multichannel analog baseband signal is treated to multichannel digital baseband signal by described analogue baseband processors 4, sends to digital baseband processor 5;
Described digital baseband processor 5 measures the signal condition of the digital baseband signal of each passage, according to the receive path of the signal condition shutdown signal state difference of the digital baseband signal of each passage; Described multichannel digital baseband signal is the signal type of multi channel signals after radio frequency reception processor and analogue baseband processors process.
Described signal condition comprises the channel estimation power value of the transmission path of the received power of each reception antenna and/or the digital baseband signal of each passage.
Embodiment six
When described signal condition comprises the received power of each reception antenna, as shown in Figure 7, the digital baseband processor 5 of described receiving system comprises: multi-channel power detector 506, radio-frequency (RF) switch 6;
The signal strength signal intensity of every root reception antenna that described multi-channel power detector 506 obtains according to the digital baseband signal by each passage determines the received signal strength indicator RSSI of every root reception antenna, and described RSSI represents the received power of reception antenna; The value in the decibel territory of the RSSI of described every root reception antenna is according to RSSI j, dB=10 × log 10(RSSI j) obtain, wherein, j represents the sequence number of reception antenna, and j is the natural numbers such as 1,2,3,4, RSSI j, dBrepresent the value in the decibel territory of the RSSI of jth root reception antenna, RSSI jrepresent the RSSI of jth root reception antenna, RSSI is generally the power statistic by carrying out the appropriate time cycle to the baseband signal received, and carry out AGC compensate obtain, usually can obtain from AGC module, know rssi measurement process for a person skilled in the art, just repeated no longer further here.
Described radio-frequency (RF) switch 6 opens or closes reception antenna, and described radio-frequency (RF) switch 6 is arranged between reception antenna and radio frequency reception processor 3.
The value in the decibel territory of the RSSI of any two reception antennas obtained contrasts by described multi-channel power detector 506, when determining that the value in the decibel territory of the RSSI of described two reception antennas at least differs the first comparison threshold according to the comparing result obtained, close the reception antenna that the value in the decibel territory of described RSSI is low;
Particularly, for jth root reception antenna and kth root reception antenna, the value in the decibel territory of the RSSI of described jth root reception antenna is RSSI j, dB, the value in the decibel territory of the RSSI of described kth root reception antenna is RSSI k, dB;
Work as RSSI k, dB>=T 1+ RSSI j, dBtime, multi-channel power detector 506 closes the radio-frequency (RF) switch 6 of kth root reception antenna, and keep kth root reception antenna to open, multi-channel power detector 506 disconnects the radio-frequency (RF) switch 6 of jth root reception antenna, closes described RSSI j, dBcorresponding jth root reception antenna; Described T 1be the first comparison threshold, can 10dB ~ 20dB be set to, can also adjust according to actual conditions.
Work as RSSI k, dB≤-T 1+ RSSI j, dBtime, multi-channel power detector 506 closes the radio-frequency (RF) switch 6 of jth root reception antenna, and keep jth root reception antenna to open, multi-channel power detector 506 disconnects kth root reception antenna radio-frequency (RF) switch 6, closes described RSSI k, dBcorresponding kth root reception antenna; Described-T 1be that the first comparison threshold gets negative value.
Embodiment seven
When described signal condition comprises the channel estimation power value of the transmission path of each Received signal strength, as shown in Figure 8, the digital baseband processor 5 of described receiving system comprises: multichannel estimation processor 501, multi-channel power detector 506, channel switch 503;
Described multichannel estimation processor 501 adopts the transmission path of diverse ways to every railway digital baseband signal to carry out channel estimating according to Received signal strength from different communication standards, the methods such as correlation method, equalization or associating multi-user mensuration can be adopted to carry out channel estimating, such as: for the Received signal strength from WCDMA, CPICH correlation method is used to carry out channel estimating to transmission path; For the Received signal strength from GSM, the decorrelation method of 26 frequency pilot signs in the middle of business time-slot is adopted to carry out channel estimating to transmission path; For the Received signal strength from LTE, frequency domain equalization method is adopted to carry out channel estimating to transmission path; For the Received signal strength from TD-SCDMA, leading code in time slot is adopted to carry out channel estimating to transmission path;
Described multichannel estimation processor 501 obtains the channel estimation power value of every road transmission path according to the channel estimating of every road transmission path, especially by obtain the channel estimation power value of every road transmission path, wherein, the channel estimation power value of the n-th transmission paths representing from the i-th transmit antennas to jth root reception antenna.
Described channel switch 503 opens or closes transmission path, and described channel switch 503 is arranged on the output of multichannel estimation processor 501.
Described multi-channel power detector 506 measures the channel strength of the transmission path of the digital baseband signal of each passage according to the channel estimation power value of the transmission path of the digital baseband signal of each passage, and the received signal strength of every root reception antenna is RSSI j, according to RSSI jthe channel estimating of the transmission path obtained is wherein, ij represents the transmission path from the i-th transmit antennas to jth root reception antenna, and n represents the n-th transmission paths;
Described multi-channel power detector 506 determines the value in the decibel territory of the channel strength of described transmission path according to the channel strength of the transmission path obtained;
Particularly, for the transmission path between the i-th transmit antennas to jth root reception antenna, multi-channel power detector 506 passes through obtain the value in the decibel territory of the channel strength of the n-th transmission paths between the i-th transmit antennas to jth root reception antenna and the channel strength of described transmission path, wherein, P ijrepresent the channel strength of the transmission path between the i-th transmit antennas to jth root reception antenna, P ij, dBrepresent the value in the decibel territory of the channel strength of the transmission path between the i-th transmit antennas to jth root reception antenna, L represents from the i-th transmit antennas to jth root reception antenna, there is L bar multipath.
Described multi-channel power detector 506 is according to the value in the decibel territory of the channel strength of each transmission path obtained, contrast the value in the decibel territory of the channel strength of any two transmission paths between transmitting antenna and reception antenna, when determining that according to the comparing result obtained the value in the decibel territory of the channel strength of described two pairs of transmission paths between transmitting antenna and reception antenna at least differs the 3rd comparison threshold, the transmission path that the value in the decibel territory of the channel strength in closing transmission path is low;
Particularly, with i-th and h root transmitting antenna, and jth root reception antenna is example, and i-th transmitting antenna is P to the value in the decibel territory of the channel strength of the transmission path of jth root reception antenna ij, dB, h root transmitting antenna is P to the value in the decibel territory of the channel strength of the transmission path of jth root reception antenna hj, dB, compare P ij, dBwith P hj, dBbetween relation:
Work as P ij, dB>=T 3+ P hj, dBtime, described multi-channel power detector 506 disconnects the channel switch 503 of h root transmitting antenna to the transmission path of jth root reception antenna, close the transmission path of h root transmitting antenna to jth root reception antenna, closed i-th transmitting antenna of described multi-channel power detector 506, to the channel switch 503 of the transmission path of jth root reception antenna, keeps i-th transmitting antenna to open to the transmission path of jth root reception antenna; Described T 3be the 3rd comparison threshold, can 5dB ~ 15dB be set to, can also arrange according to actual conditions.
Work as P ij, dB≤-T 3+ P hj, dBtime, described multi-channel power detector 506 disconnects the channel switch 503 of i-th transmitting antenna to the transmission path of jth root reception antenna, close the transmission path of i-th transmitting antenna to jth root reception antenna, the closed h root transmitting antenna of described multi-channel power detector 506, to the channel switch 503 of the transmission path of jth root reception antenna, keeps h root transmitting antenna to open to the transmission path of jth root reception antenna; Described-T 3be that the 3rd comparison threshold gets negative value.
Work as T 3+ P hj, dB>P ij, dB>-T 3+ P hj, dBtime, described multi-channel power detector 506 closes the channel switch 503 of all transmission paths, keeps i-th transmitting antenna all to open to the transmission path of jth root reception antenna and h root transmitting antenna to the transmission path of jth root reception antenna.
Embodiment eight
When described signal condition comprises the channel estimation power value of the transmission path of each Received signal strength, as shown in Figure 9, the digital baseband processor 5 of described receiving system comprises: multichannel estimation processor 501, multi-channel power detector 506, radio-frequency (RF) switch 6;
Described multi-channel power detector 506 is according to the value P in the decibel territory of the channel strength of each transmission path obtained ijdetermine the value in the channel strength of jth root reception antenna and the decibel territory of channel strength, especially by obtain the value in the channel strength of jth root reception antenna and the decibel territory of channel strength, wherein, i represents transmitting antenna sequence number, and i=1 represents the first transmit antennas, P jrepresent the channel strength of jth root reception antenna, P j, dBrepresent the value in the decibel territory of the channel strength of jth root reception antenna.
Described radio-frequency (RF) switch 6 opens or closes reception antenna, and described radio-frequency (RF) switch 6 is arranged between reception antenna and radio frequency reception processor 3.
Described multi-channel power detector 506 is according to the channel strength P of the every root reception antenna obtained jthe value in decibel territory, contrast the value in the decibel territory of the channel strength of any two reception antennas, when determining that the value in the decibel territory of the channel strength of described two reception antennas at least differs the second comparison threshold according to acquisition comparing result, close the reception antenna that the value in the decibel territory of channel strength is low;
Particularly, for jth root reception antenna and kth root reception antenna, the value in the decibel territory of the channel strength of jth root reception antenna is P j, dB, the value in the decibel territory of the channel strength of kth root reception antenna is P k, dB, work as P j, dB>=T 2+ P k, dBtime, described multi-channel power detector 506 closes the radio-frequency (RF) switch 6 of jth root reception antenna, and keep jth root reception antenna to open, described multi-channel power detector 506 disconnects the radio-frequency (RF) switch 6 of kth root reception antenna, closes kth root reception antenna; Described T 2be the second comparison threshold, can 10dB ~ 20dB be set to, also can arrange according to actual conditions.
Embodiment nine
When described signal condition comprises the channel estimation power value of the received power of each reception antenna and the transmission path of each Received signal strength, as shown in Figure 10, described digital baseband processor 5 comprises: multichannel estimation processor 501, multi-channel power detector 506, radio-frequency (RF) switch 6, channel switch 503;
The value in the decibel territory of the RSSI of any two reception antennas obtained contrasts by described multi-channel power detector 506, when determining that the value in the decibel territory of the RSSI of described two reception antennas at least differs the first comparison threshold according to the comparing result obtained, close the reception antenna that the value in the decibel territory of described RSSI is low; Notify that multichannel estimation processor 501 carries out channel estimating to the transmission path of the digital baseband signal of passage each on the reception antenna of not closing afterwards;
After described multichannel estimation processor 501 receives the notice of multi-channel power detector 506, channel estimating is carried out to the transmission path of the digital baseband signal of passage each on the reception antenna of not closing, obtain the channel estimation power value of every road transmission path according to the channel estimating of every road transmission path, be sent to multi-channel power detector 506;
Described multi-channel power detector 506 measures the channel strength of the transmission path of the digital baseband signal of each passage according to the channel estimation power value of the transmission path of the digital baseband signal of each passage, then determines the value in the decibel territory of the channel strength of described transmission path according to the channel strength of the transmission path obtained; Contrast the value in the decibel territory of the channel strength of any two transmission paths between transmitting antenna and reception antenna, when determining that according to the comparing result obtained the value in the decibel territory of the channel strength of described two pairs of transmission paths between transmitting antenna and reception antenna at least differs the 3rd comparison threshold, the transmission path that the value in the decibel territory of the channel strength in closing transmission path is low.
Described multi-channel power detector 506 periodically opens the transmission path and/or reception antenna of having cut out, according to the channel strength of the transmission path remeasured and/or the channel strength of reception antenna, judge whether to continue to close the low transmission path of described channel strength and/or reception antenna;
Wherein, described multi-channel power detector 506 is in fixed cycle T, open the transmission path and/or reception antenna of all having closed, described multi-channel power detector 506, according to the signal strength signal intensity of the transmission path remeasured and/or reception antenna, judges whether to continue the low transmission path of shutdown signal intensity and/or reception antenna; The translational speed of environment residing for the receiving system that described fixed cycle T detects according to multi-channel power detector 506, the time selectivity spy of channel estimating determine the value of fixed cycle T.
Embodiment ten
As shown in figure 11, the digital baseband processor 5 of described receiving system also comprises channel noise reduction processor 502, multi channel signals detector 504, frequency domain characteristic and velocity estimation processor 505; Wherein:
Described channel noise reduction processor 502 receives the channel estimating of each transmission path of digital baseband signal and multichannel estimation processor 501 transmission, carries out noise reduction process, be sent to multi-channel power detector 506 to the channel estimating of each transmission path; Noise reduction process is carried out to digital baseband signal, is sent to frequency domain characteristic and velocity estimation processor 505;
The characteristic of channel of described frequency domain characteristic and velocity estimation processor 505 pairs of digital baseband signals is analyzed, and is sent to multi channel signals detector 504; Such as, can analyze the frequency domain characteristic of digital baseband signal, obtain the frequency selectivity of wireless channel;
Described multi channel signals detector 504 carries out type selecting according to receiving algorithm to digital baseband signal; Such as, for WCDMA receiver, if frequency domain characteristic is better, can actuating code chip level balanced reception algorithm (or on chip-level basis multiple sampling balanced reception), obtain satisfied receptivity; When frequency domain characteristic is bad, also namely frequency selectivity is poor, then adopt traditional RAKE receiving algorithm.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. a method of reseptance for multi channel signals, is characterized in that, the method comprises:
Receiving terminal measures the signal condition of multi channel signals, according to the receive path of the signal condition shutdown signal state difference of multi channel signals; Described signal condition comprises the channel estimation power value of the received power of each reception antenna and/or the transmission path of each Received signal strength.
2. method of reseptance according to claim 1, it is characterized in that, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described signal condition is the received power of each reception antenna, receiving terminal determines the received power of each reception antenna according to the signal strength signal intensity of the Received signal strength of each reception antenna, closes the low reception antenna of received power according to the received power of each reception antenna obtained.
3. method of reseptance according to claim 1, it is characterized in that, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described signal condition is the channel estimation power value of the transmission path of each Received signal strength, receiving terminal carries out channel estimating to the transmission path of each Received signal strength, the channel strength of the transmission path of each Received signal strength is measured according to the channel estimation power value of the transmission path of each Received signal strength, the low transmission path of channel strength is closed again according to the channel strength of the transmission path of each Received signal strength.
4. method of reseptance according to claim 1, it is characterized in that, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described signal condition is the channel estimation power value of the transmission path of each Received signal strength, receiving terminal carries out channel estimating to the transmission path of each Received signal strength, determine the channel strength of each reception antenna according to the channel estimation power value of the transmission path of each Received signal strength, then close the low reception antenna of channel strength according to the channel strength of each reception antenna.
5. method of reseptance according to claim 1, it is characterized in that, described receiving terminal measures the signal condition of multi channel signals, receive path according to the signal condition shutdown signal state difference of multi channel signals is: described receiving state signal is the channel estimation power value of the received power of each reception antenna and the transmission path of each Received signal strength, receiving terminal determines the received power of each reception antenna according to the signal strength signal intensity of the Received signal strength of each reception antenna, close the reception antenna that received power is low, afterwards channel estimating is carried out to the transmission path of each Received signal strength that the reception antenna of not closing receives, the channel strength of the transmission path of each Received signal strength is measured according to the channel estimation power value of the transmission path of each Received signal strength, close the transmission path that channel strength is low.
6. method of reseptance according to claim 1, it is characterized in that, the method also comprises: after the receive path of the described signal condition shutdown signal state difference according to multi channel signals, described receiving terminal periodically opens the receive path of having closed, and determines whether the receive path continuing to close described signal condition difference according to the signal condition of the multi channel signals remeasured.
7. a receiving system for multi channel signals, is characterized in that, this device comprises: radio frequency reception processor, analogue baseband processors, digital baseband processor; Wherein,
Described radio frequency reception processor, for being multichannel analog baseband signal by multi-channel signal processing, sends to analogue baseband processors;
Described analogue baseband processors, for described multichannel analog baseband signal is treated to multichannel digital baseband signal, sends to digital baseband processor;
Described digital baseband processor, for measuring the signal condition of the digital baseband signal of each passage, according to the receive path of the signal condition shutdown signal state difference of the digital baseband signal of each passage;
Described signal condition comprises the channel estimation power value of the transmission path of the received power of each reception antenna and/or the digital baseband signal of each passage.
8. receiving system according to claim 7, is characterized in that, described digital baseband processor comprises: multi-channel power detector, radio-frequency (RF) switch, wherein,
Described multi-channel power detector, the signal strength signal intensity for the digital baseband signal according to each reception antenna determines the received power of each reception antenna, closes radio-frequency (RF) switch corresponding to the low reception antenna of received power according to the received power of each reception antenna obtained;
Described radio-frequency (RF) switch, is used to open or close reception antenna.
9. receiving system according to claim 7, is characterized in that, described digital baseband processor comprises: multichannel estimation processor, multi-channel power detector, channel switch, wherein,
Described multichannel estimation processor, the transmission path for the digital baseband signal to each passage carries out channel estimating, and the channel estimation power value of the transmission path of the digital baseband signal of each passage is sent to multi-channel power detector;
Described multi-channel power detector, channel estimation power value for the transmission path of the digital baseband signal according to each passage measures the channel strength of the transmission path of the digital baseband signal of each passage, then closes channel switch corresponding to the low transmission path of channel strength according to the channel strength of the transmission path of the digital baseband signal of each passage;
Described channel switch, is used to open or close transmission path.
10. receiving system according to claim 7, is characterized in that, described digital baseband processor comprises: multichannel estimation processor, multi-channel power detector, channel switch, wherein,
Described multichannel estimation processor, the transmission path for the digital baseband signal to each passage carries out channel estimating, and the channel estimation power value of the transmission path of the digital baseband signal of each passage is sent to multi-channel power detector;
Described multi-channel power detector, the channel estimation power value for the transmission path of the digital baseband signal according to each passage determines the channel strength of each reception antenna, then closes the low reception antenna of channel strength according to the channel strength of each reception antenna.
11. receiving systems according to claim 7, is characterized in that, described digital baseband processor comprises: multichannel estimation processor, multi-channel power detector, radio-frequency (RF) switch, channel switch, wherein,
Described multi-channel power detector, the signal strength signal intensity for the digital baseband signal according to each reception antenna determines the received power of each reception antenna, closes radio-frequency (RF) switch corresponding to the low reception antenna of received power according to the received power of each reception antenna obtained; Notify that the transmission path of multichannel estimation processor to the digital baseband signal of passage each on the reception antenna of not closing carries out channel estimating afterwards, measure the channel strength of the transmission path of the digital baseband signal of each passage according to the channel estimation power value of the transmission path of the digital baseband signal of each passage, then close channel switch corresponding to the low transmission path of channel strength according to the channel strength of the transmission path of the digital baseband signal of each passage;
Described multichannel estimation processor, transmission path for the digital baseband signal to passage each on the reception antenna of not closing carries out channel estimating, and the channel estimation power value of the transmission path of the digital baseband signal of each passage is sent to multi-channel power detector;
Described radio-frequency (RF) switch, is used to open or close reception antenna;
Described channel switch, is used to open or close transmission path.
12. receiving systems according to claim 7, it is characterized in that, described digital baseband processor, also for periodically opening the receive path of having closed, determine whether the receive path continuing to close described signal condition difference according to the signal condition of the digital baseband signal of each passage remeasured.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106817200A (en) * 2017-02-09 2017-06-09 武汉米风通信技术有限公司 Dynamic signal detection method based on multichannel communication reception system
CN107172690A (en) * 2016-03-08 2017-09-15 电信科学技术研究院 Reduce the method and device of terminal chip MIMO detector power consumptions
CN112511207A (en) * 2020-11-03 2021-03-16 广州技象科技有限公司 Multi-antenna diversity transmission method and device based on power consumption management
CN112532291A (en) * 2020-11-22 2021-03-19 广州技象科技有限公司 Power consumption management method and device for multi-antenna diversity reception

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113613303B (en) * 2021-08-09 2022-08-26 电子科技大学 Millimeter wave communication transmission method based on multichannel technology

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1254998A (en) * 1998-11-02 2000-05-31 日本电气株式会社 Radio communication equipment and method for lowering its energy consumption
CN1835426A (en) * 2005-03-17 2006-09-20 中兴通讯股份有限公司 Method and device of realizing alarm of antenna detection
CN101162932A (en) * 2006-10-12 2008-04-16 联想（新加坡）私人有限公司 Method for setting mimo wireless communication system and computer thereof
CN102769475A (en) * 2011-05-05 2012-11-07 联发科技股份有限公司 Signal transceiving module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1254998A (en) * 1998-11-02 2000-05-31 日本电气株式会社 Radio communication equipment and method for lowering its energy consumption
CN1835426A (en) * 2005-03-17 2006-09-20 中兴通讯股份有限公司 Method and device of realizing alarm of antenna detection
CN101162932A (en) * 2006-10-12 2008-04-16 联想（新加坡）私人有限公司 Method for setting mimo wireless communication system and computer thereof
CN102769475A (en) * 2011-05-05 2012-11-07 联发科技股份有限公司 Signal transceiving module

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107172690A (en) * 2016-03-08 2017-09-15 电信科学技术研究院 Reduce the method and device of terminal chip MIMO detector power consumptions
CN107172690B (en) * 2016-03-08 2019-09-17 电信科学技术研究院 Reduce the method and device of terminal chip MIMO detector power consumption
CN106817200A (en) * 2017-02-09 2017-06-09 武汉米风通信技术有限公司 Dynamic signal detection method based on multichannel communication reception system
CN106817200B (en) * 2017-02-09 2020-05-05 成都米风感知科技有限公司 Dynamic signal detection method based on multi-channel communication receiving system
CN112511207A (en) * 2020-11-03 2021-03-16 广州技象科技有限公司 Multi-antenna diversity transmission method and device based on power consumption management
CN112532291A (en) * 2020-11-22 2021-03-19 广州技象科技有限公司 Power consumption management method and device for multi-antenna diversity reception

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