TWI261429B - A method for generating OFDM frame for wireless communications - Google Patents

Abstract

A method for generating an orthogonal frequency division multiplexing (OFDM) frame for wireless communications by generating a preamble of the OFDM frame, wherein the preamble includes training information and signal information. The method continues by generating a plurality of data fields includes a plurality of subcarriers, wherein at least some of the plurality of data fields includes, at most, three of the plurality of subcarriers allocated for a pilot signal.

Description

1261429 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a format between a wireless communication system and a wireless communication system. , line communication equipment [previous technology] many years. The Internet is another well-known example of a communication network that has also emerged. These communication networks make it possible for client devices to connect to the Internet of electronic devices on a global scale. Specific examples of communication networks include wired packets: #_路, wireless packet (4) networks, wired telephone networks, wireless telephone networks, and satellite communication networks. Often these communication networks include scales that serve the client device. The public exchange % live, 罔 (PSTN) is probably the most well-known example of a communication network, and it has already appeared. Wired area networks (LANs) such as Ethernet (Ethemets) are also common, supporting the service area _ network computers and other equipment tracks. Regional network connections are often connected to Guang_ and Internet. Each of the network towels is generally considered to be a wired network, even though some networks, such as the pSTN, may include a transmission channel that can be used for wireless connections. Compared with wired networks, wireless networks appear to be relatively short-lived, such as mobile phone networks, wireless local area networks (WLANs), and satellite communication networks. Wireless area networks are usually established according to one or more standards, such as IEEE802.il, .11(a), .11 (b), ·11 (g), etc. These standards can be collectively referred to as "IEEE802.11 network,. In the IEEE802.il network, multiple wireless access points (APs) 1261429 are connected to each other, and each point can support wireless communication devices (such as computers including phase mad interface) for wireless communication. Provides wireless communication equipment with the ability to access networks outside the area of the bad line network. When using mobile computers, mobile data terminals, and other generally non-fixed, sub-accessible, singularly connected, wireless areas And 罔 have significant advantages. However, compared with wired regional networks such as IEEE Mobile.3, hotline regional networks provide lower listening rates. Currently configured wired networks can provide up to 1 billion bits of it (Gigabit) / sec bandwidth, and soon the wired network can provide 1GGB / sec of bandwidth. Because of the advantages of the service mobile device, the wireless area network often covers the service area of the wired network. In the above devices, Wired area network connection The wealth is fixed, such as a desktop computer; and the connection to the wireless area network is slightly _, such as a mobile computer. And the mobile computer can also have a wired area network connection, so that it can be compared when it is not decorated. High-bandwidth service 0 The new wireless network standard supports a relatively high data rate. For example, the IEEE8〇2·11 (a) standard supports data rates up to 54 megabits (Bits) per second, IEEE 802.il ( g) The above data rate is also reached. IEEE8〇2 n(4) uses a positive parent frequency knife (〇池〇g〇nal ανϋ〇η

Multiplexing, OFDM) physical layer to support the above data rate. By means of the FDM physical layer, the available carriers are divided into a plurality of subcarriers or channels (subcarriers tones) each of which transmits a portion of the multiplexed signal stream. ffiEE8 〇2 · j j 1261429 () DM 4 The standby layer includes a 48-bit metadata transmission channel and a 4-bit control signal channel, and the space/bandwidth is α-MHz. As shown in the figure, subcarrier 〇, subcarrier 27 32 and rhyme _27~_3 j are not used. Subcarrier 10^, subcarrier +/21 is used as 4 control signal channels or signals. Subcarriers 1 to 6, subcarriers 8 to 2, subcarriers 22 to 26, subcarriers] to 6, subcarrier U0, and subcarriers 22 to 26 constitute a transmission channel of (4). Tian will standardize the subcarrier allocation of the first-picture and support the wide-ranging change of the wireless local area network. There are still some wireless area network applications that do not rely on carrier allocation. For example, if the channel bandwidth is narrow or multiple people are involved (melting _ muitipie Gutput'MIMQ), the wave assignment of the f-map may not be optimal and/or achievable. I want to appear in the field—a kind of orthogonal frequency division multiplexing building generation equipment and method for 乍 channel application and/or ΜΙΜΟ application. SUMMARY OF THE INVENTION The format of the orthogonal frequency division frame of the present invention fully meets the above and other requirements. In the embodiment, the method for generating orthogonal frequency division multiplexing frames for wireless communication is disclosed, which firstly produces the pre-existing data of the red crossover frequency, wherein the depleted material includes training information. And letter f tiger information. The method then generates a complex data block of the orthogonal frequency division multiplexing frame, wherein each of the plurality of data blocks includes a plurality of subcarriers, wherein at least a portion of the plurality of data blocks includes, for example, at least three of the assigned control signals Complex subcarriers. In another embodiment, a method for generating 1261429 Orthogonal Frequency Division Multiplexing (OFDM) frames for multiple incoming and outgoing wireless communications is disclosed, first converting a data stream into a complex data stream. The method then converts the complex data stream into a complex Orthogonal Frequency Division Multiplexing frame, wherein each of the complex Orthogonal Frequency Division Multiplexing frames includes preamble data having training information and signal information, wherein each of the complex numbers is positive The frequency division multiplexing frame includes a complex data column, wherein each of the complex data columns of each of the complex orthogonal frequency division multiplexing frames includes a plurality of subcarriers, wherein at least one of the plurality of complex orthogonal frequency division multiplexing frames A portion of the plurality of data blocks includes up to three of the plurality of subcarriers to which the control signal is assigned. In still another embodiment, a method for receiving an orthogonal frequency division multiplexing frame for wireless communication is disclosed, which first receives the orthogonal frequency division multiplexing frame preamble data, wherein the preamble data includes training information. And signal information. The method then receives a complex data block of the orthogonal frequency division multiplexed frame, wherein each of the plurality of data fields includes a plurality of subcarrier frequencies 'where an indication of signal information, at least part of the plurality of data columns includes, at most three The complex subcarrier frequencies of the assigned control signals. The method then converts the complex data into internal data (inb〇und data). In a further embodiment, one or more of such methods can be a radio frequency transmitter and/or a radio frequency receiver. [Embodiment] The second figure shows a schematic structural diagram of a communication system 10, which includes a base station (BS) and/or an access point (Ap) 12_16, and a plurality of wireless communication devices 18_32. And a network hardware component%. 1261429 The wireless channel reduction port 8-32 can be a laptop host is and %, a personal digital assistant main squad 20 and 30, a personal computer host % and %, and/or mobile phone domains 22 and 28. The post-transfer will be described in more detail with the first device. —...^ Station or access point

The ground straw is connected to the network hardware 34 by a local area network (LAN) 36, 3M 4 . The network hardware 34 can be a router, a converter, a 'bridge, a data machine, a system controller, etc., which can provide a connection 42 to the communication system ig. Each base station or access point 12_16 has an associated day, = antenna array, to enable communication between wireless communication devices within its area. Usually, the 'wireless communication device' registers with a specific base station or access point to reduce the service from the communication system ω. Hiding directly to her point to _ news), wireless communication equipment will borrow φ - designated direct communication.

- Usually 4 stations are used for mobile phone systems and similar systems, and pick-up points are used for nowhere in the home or building. Ignoring specific types of communication systems, each wireless communication device includes a built-in wireless transceiver and/or is connected to a wireless transceiver. It should be noted that - or multiple access points and their associated radio track equipment may be in the same building. The second figure shows a schematic block diagram of a wireless communication device including host device 18-32 and an associated wireless transceiver 6 for the mobile phone host, which is its fine-grained component. For a personal digital assistant host laptop host, and/or a personal computer host, the wireless transceiver (8) 9 1261429 can be either a built-in component or an external connection component. ^ / / can be seen in the figure, the host device 18_32 includes a processing module 5, L body 52 hot line transceiver interface 54, an input interface 58, and an output interface 56. The processing module 5 and the memory Μ execute corresponding instructions normally made by the host device. For example, for a mobile phone host device, the processing module % performs the communication function according to the specific mobile phone standard. The wireless transceiver interface S4 is used to implement data reception and transmission with the wireless transceiver 6. For data received from the wireless transceiver 60 (i.e., inbound data # inbounddata), the wireless transceiver interface M provides the data to the processing module 5 for further processing and/or transmission to the output interface %. The output interface provides connectivity to the output display system, such as displays, monitors, speakers, etc., so that the received data can be displayed. The wireless transceiver interface can also provide the processing module 50 to the wireless transceiver (4). The processing module % can use the input "face 58 to receive the Utbound data from the input device such as keyboard, keypad, microphone, etc." or generate the data by itself. For the information received by inputting the two sides 58 The processing module 5 can perform a corresponding host function on the data and/or transmit the data to the wireless transceiver 60 via the wireless transceiver interface 54. The wireless transceiver 60 includes a host interface 62 and digital receiver processing. Module 64, an analog-to-digital converter (anal〇g_t〇_di curry (3) claw coffee", he c) 66, a wave/gain module 68, an IF hybrid down conversion module 70, a receiver (Rx 10 1261429 Filter 7 - low noise amplifier (L〇wn〇iseamqing% ship) 72, - transmit / touch (Tx / Rx) switch 73, - local oscillator module %, memory is, a Digital developed processor processing module 76, a digital-to-analog converter (DAC) 78, a filter/gain module 8〇, an IF hybrid up-conversion module 82, and a power amplifier Fat % pA) 84, - Transmitter (Tx) filter module 8S, and antenna %. The antenna may be a single antenna shared by the transmission and reception paths under the control of the transmission/reception switch 73, or an antenna different for the transmission path and the Wei position. The implementation of the antenna will depend on the particular criteria to which the wireless communication device is adapted. The digital reception 1, the _ group 64, and the touch transmission _ processing·% are combined with the memory 75 in which the instruction is stored, and the digital receiver function and the digital developed pirate function are divided. Digital receiver functions include, but are not limited to, digital band to baseband conversion, demodulation, demapping, dec ding, and/or Decrypt (descmmbling). Digital transmitter functions include, but are not limited to, encryption (s_bling), encoding (enc〇ding), combined mapping (c〇nstdiaJn mapping) alpha-perimeter (m〇duiati〇n), and/or digital baseband to I? conversion. To implement the digital receiver and transmitter processing modules 64 and 76, a shared processing device, a separate device, or a processing device can be used. The processor, the micro-programmable gate device can be a microprocessor, a microcontroller, a digital signal brain, a central processing unit, a field programmable gate array 1261429 gold, a programmable logic device, a state machine, a logic Circuit ♦ 1=7 based on the order of the code to the number ^ for $ X "body 75 can be a single storage device or a plurality of memory. The memory of the memory from the reading only (four), random access record: memory, non-easy Loss of memory, static memory, dynamic memory = body, and any device that can store miscellaneous information. It should be noted that = = = = 64 - and / or 76 by state machine, analog circuit, digital circuit And/or the logic circuit, when the _ or the plural function is displayed, the corresponding operation instruction is stored, the class _, the _ path, and the wireless transceiver (4) is received by the host interface 62. (d) b_d _94. The host interface 62 transmits the outbound data 94 to the digital transmitter processing module 76, which uses the wireless communication standard (5) such as 臓8〇2.:Π, Bluetooth, etc.) to perform the outbound data 94. Processing and generating outbound baseband money%. Outbound baseband 96 includes a 〇fdm frame, which may be a -digit baseband signal (eg, having a Q IF) or a - digit low positive k number, the low IF frequency range typically ranging from 1 〇〇KHz to several million The digital/converter 78 converts the outbound baseband signal % from the digit field to the analog domain. The filter/gain module 80 is used to transmit the analog signal to the positive hybrid up-conversion module 82. The signal performs and/or adjusts the gain of the analog signal. The IF hybrid up-conversion mode, group 82 bases the analog baseband or low positive signal on a transmitter local oscillator signal (TxLO) 83 provided by the local oscillator group % 1261429. Converted into RF money. The function tree A 84 is then amplified by _ money, into the outbound RF signal 98, and sent to the transmitter filter module % for chopping. ' Antenna 86 will be the outbound rf signal 98 is sent to a target device, such as a base station, an access point, and/or another wireless communication device. The hotline transceiver 60 also receives, via the antenna 86, a person station sent by a base station, an access point, or another wireless communication device. RF signal 88. Field % is provided by the transmit/receive switch 73 to the inbound rf signal 88 a receiver chopper module 10 71, the receiver filter module 71 bandpass filtering the inbound rf signal 88. The receiver filter module 71 provides the filtered signal to the low impurity Amplifier 72, which amplifies signal 88 to generate an amplified inbound signal. Low noise amplifier 72 provides the amplified inbound RF signal to the down-conversion module 70, which is based on local oscillations. The receiver local oscillation signal (RxL〇) 81 provided by the module % converts the amplified inbound rf signal into an inbound low IF ^ number or baseband signal. The positive mixed down conversion module will The station low IF signal or baseband signal is provided to the filter/gain module 68. The inbound low IF signal or baseband signal is then filtered and/or adjusted by the filter/gain module 68 to generate an inbound signal after the wave. The analog-to-digital converter 66 converts the filtered inbound signal from the analog domain to the digital domain to generate an inbound baseband signal 9〇, which contains an OFDM frame, which may be a digital baseband signal or Digital low ip signal, 13 1261429 The frequency range of the low IF is usually between ιοοκΗζ and several million Hz. The digital receiver processing module 64 decodes, decrypts, demaps, and/or demodulates the inbound baseband signal 90 to recover a set of inbound data based on the particular benefit line standard adopted by the wireless transceiver 60. (inbound data) 92. The host interface 62 dreams the recovered inbound material 92 from the wireless transceiver interface 54 to the host devices 18-32.

It will be understood by those skilled in the art that the wired communication device shown in the third figure can be implemented using - or complex miscellaneous turns. For example, the host shoulder can be implemented on the integrated circuit, and the digital receiver processing module 64, the digital processing module 76, and the recording core 75 can be implemented on the second relay circuit, and the rest of the transmitter 60 The components (except antenna 86) can be implemented in a - third integrated circuit. In another example, the Lin transceiver 6() can be used on a single dragon. In another example, the processing module % and digital receive encoder processing modules 64 and 76 of the host device can be co-processing devices implemented on a single integrated circuit. Alternatively, the 'clocks 52 and 75' may be on the complex circuit or on the common processing copper-frequency circuit where the host device's dependent group %, digital receiver and transmitter are processed, and 64 and 76 are located. The fourth picture is a schematic diagram of wireless communication between two wireless communication devices. It can be seen from the figure that the 'the first wireless communication device has a transmitter (10), and the second non-BfU has a receiver 1〇2. Every 1 post is tender. The front finger of the 4 side 14 1261429 As can be seen from the figure, the receiver 100 receives a set of outbound data 94 and converts it into an outbound RIM § 98. The rf signal 98 containing the OFDM frame 1〇4 is transmitted from the transmitter 1 (8) to the receiver 102. Receiver 1 接收 2 receives 〇fdm frames 1 〇 4 as inbound RF signals 88 and converts them into a set of inbound data %. A preamble portion 1〇6 and a data portion 108 are included in the OFDM frame 104. The insufficient portion 1〇6 includes training information 11〇 and signal information 112. Taking the 802.11a application or other 8〇211 applications as an example, the training information 11〇 may include a short training sequence, a complex guard interval, and a complex long training sequence φ column. The signal information portion 112 may be a signal field consistent with 802·1丨a or other 8〇2.丨丨 rules, which provides information related to the length, data rate, etc. of the 0FDM frame 1〇4. Alternatively, the signal information 112 may contain a finger* to indicate which of the plurality of subcarriers in the lean portion of the OFDM frame will act as a control signal or channel. The data file 108 includes a plurality of guard intervals such as (4) and GJ) and a plurality of data columns 114-118. The data contained in each data block is located in the 64 subcarriers of the FDM frame. As shown in the fourth figure, in one embodiment, the data block 116 contains 64 subcarriers centered at the frequency of the RF signal 98. For a 20 MHz channel, the distance between the subcarriers is 312·5 ΚΗζ and is represented by the arrows in the fourth figure. As can be seen from the figure, some subcarriers are not used. Specifically, subcarrier 0, subcarriers 27 to 32, and subcarriers _27 to _31 are not used. In this example, only 15 ^61429 are used for two control signals and are located in subcarrier 21 and subcarrier-21. In the present embodiment, a carrier 7 and -7 are used to carry data, and they are used as pilot channels in the rules of 8〇2.iia. In this way, the control signal can be transmitted by transmitting the feed material with more subcarriers and using less subcarriers, so that a specific data column can represent more data. The fifth figure shows another configuration scheme of subcarriers in an OFDM frame. The 'control signal is located at subcarriers 7 and -7, and subcarriers 21 and -21 are used to carry data. It should be noted that, between the data column and the data column of the OFDM frame, the configuration of the subcarriers may be changed from the state shown in FIG. 4 to the state shown in the fifth figure in a certain region or in a predetermined pattern, or Fixed to the configuration state shown in the fourth or fifth figure. The sixth figure shows another configuration scheme of subcarriers in an OFDM frame. Among them, subcarriers 0, 27 to 32, and _27 to _32 are not used. Subcarrier! To 6, 8 to 20, 22 to 26, -1 to -6, -8 to -20, and -22 to -26 are used to carry data. In this embodiment, subcarriers +/_7 and subcarriers +/ _21 can be used to carry data or control signals. Similarly, 〇 to 4 of subcarriers +/_7 and subcarriers +/_21 can be used to carry the pilot channel. The seventh diagram shows the characteristics of a physical layer operating in accordance with an embodiment of the present invention. In the present invention, the physical layer resides in a 10 MHz channel and is based on OFDM. It has many similarities and differences with the physical layer of 802.11(8). Figure 3 compares the 10 MHz OFDM physical layer of the present invention with the physical layer of IEEE 802.11(8) 16 1261429. The 10 MHz OFDM physical layer of the present invention can operate in a variety of frequency bands, including the 4.9-5.0 GHz band and the 5.03-5.091 GHz band. The physical layer operates with a maximum range, a maximum allowable transmit power of 25 〇 mw, a maximum unlicensed transmit power of 250 〇 mwEIRP, and i〇〇mw. The path loss (obstacle channel) model of the physical layer can be described by the formula +, where, at a typical value of 5 〇〇 m, 116 dB + / 9.3 dB, ^ 2 must be extinguished w. The physical layer has an average of 275.9 ns of delay spread and a standard offset of 352 ns. Since the delay spread of the physical layer is larger than the delay spread of the IEEE8〇211(8) physical layer (5〇ns delayed open channel), a guard interval (loop first code) is required. Moreover, since the path loss of the physical layer is larger than the path loss of the IEEE8〇2 n(8) physical layer, the receiver supporting the physical layer should have higher sensitivity. In contrast to the IEEE 802_11(8) physical layer, when the bandwidth of the receiver is reduced by a factor of 2, the SNR of the physical layer is increased by 3 dB. The guard interval (the first loop of the loop) is doubled to 1.6ms. The symbol length is doubled to maintain the same guard interval overhead as IEEE 802.il(8). As with the IEEE 8 〇 2 n (8) physical layer, a 64-point fast Fourier transform (FFT) can also be used in the physical layer. The eighth figure describes the control method of the physical layer channel according to an embodiment of the present invention. Since the bandwidth of the physical layer is reduced (relative to the IEEE 8 〇 211 (a) physical layer bandwidth) 'center channel, channel_丨 and channel +1 are closer to DC. At 1261429 DC, many receivers are connected to the notch ferrite. The normal frequency compensation between the supporting mobile terminals effectively moves the groove away from Dc. At the interval close to the channel, the frequency compensation is added. Under the harsh conditions of money, the frequency compensation can delete the channel _丨 or the channel +1 part due to the notch filter and the wave filter. Thus, in accordance with the present invention, the internal two data subcarriers (channels and channels are removed/no longer used to adjust the frequency compensation. Using Peng said that the physical layer moves on channel-1 and +1. Bearer control signal

The deputy interception of -12, -7, 7 and 21 is reduced. After the correction on the receive wave, the physical layer includes a deadband bandwidth of 7.28 ΚΗζ + receiver groove bandwidth. In practice, the physical layer alternately uses the channel according to (4) _ (starting from the zero signal symbol :): k=3; {_7,7} k2 2; {-21,21} k=4 ; {-7,21 }, 丄k-5; {7, 21}

Read the plan scale (4) The time period of the money = increase due to the factor 2, and the short way and the second method are produced in the same way as the second knife · 3. 3 # 4.5, 6, read. Support, etc. 18, 25, 27Mbps. These extended symbols (relative to IEEE802.li: daytime and airtime require MAC time changes (a) physical layer). These time changes are summarized as 18 1261429 aCCATime increased from 4 to 8 microseconds aAirPropagatkmTime increased from far less than 1 microsecond to 2 microseconds aSlotTIME two 14 microseconds aSIFTIME=16 microseconds (no change) PIFS=30 microseconds (SIF+ SLOT)

DIFS = 44 microseconds (SIF + 2 * SLCXQ Figure 9 is a subcarrier allocation diagram for a 0FDM frame for a narrow channel. A narrow channel can have a bandwidth of less than 20 MHz, and in one embodiment 10 can be 10 MHz. In the example, subcarriers 〇 and +1 and _丨 are not used with reference to Fig. 8. In addition, subcarriers 27 to 32 and -27 to 32 are also not used. In this example, subcarriers -1 and + are replaced. 1 loss channel, using subcarriers +7 and _7 or +21 and -21 for transmitting data, and using another pair of subcarriers for transmitting control signals. In this example, 'subcarriers +1 and q are used for transmission. The data is a schematic diagram of a wireless communication structure of multiple-input-multiple-output (MIMO). In this example, the transmitter 120 of the wireless communication device® receives the data stream 124 of the outbound station. And converting it into a complex RF signal, each RF signal comprising a complex ofdm frame 126. Receiver 122 receives the complex RF signal and converts it into an inbound data stream 128. Transmitter 120 and receiver 122 will further In conjunction with the description of the wireless communication device of Figure 11, in the drawings, each The OTDM frame 126 may be the secondary 19 1261429 carrier allocation mode shown in the sixth figure. Moreover, the subcarrier allocation manner may be different from the path to the path. For example, if there are four wireless communication paths existing in the transmitter 12 and Between the receivers 122, each of the four paths may have different subcarrier allocation formulas. For example, '-one wireless path may have no control signal channel, and the other may have four control signal channels, and the rest One of the two may be +7 and 7, another -21 and -2, as will be appreciated by those skilled in the art, since multiple communication paths between the transmitter and receiver 122 are issued from one path. Control signal channels can be used to synchronize and/or point to another path, or they can be used for _ associative synchronization and/or pointing to multiple paths. Tenth-figure is wireless including host device (10) and associated wireless transceiver 16〇 A schematic diagram of the structure of a communication bribe. In a mobile phone, the wireless transceiver 16 is a built-in component. For a personal digital assistant host, a laptop host, and/or a personal computer host, the wireless transceiver 16 can Built-in or external combination components. As shown, the host device 18_32 includes a processing module 5, a memory port, a wireless transceiver interface 54, an input interface 58 and an output interface %. The processing module 50 and the memory 52 Execute (4) communication instructions completed on the general-purpose device. For example, the mobile phone host, the processing module 5 完成 completes the communication communication function according to the specific mobile phone standard. The wireless receiving interface 54 realizes the receiving and transmitting of data from the wireless transceiver. The transceiver interface 54 sends these 20 1261429 2 inb_ddata) received from the wireless transceiver to the processing module (4) for the rest-step processing and/or the transmission = spoofing 6. The output interface 56 is connected to the display, the monitor, the speaker, etc. (4) for reading and receiving data. The wireless transceiver interface is also provided for processing the module's wireless transceiver (10) (4). The reliance (4) can receive the tribute from the input device of the input interface 58 such as a keyboard, a keypad, a microphone, or the like (4). For the information received by the input interface 58, the processing module 50 can provide the corresponding host functions in terms of data and/or transmit the lean material to the wireless transceiver 16 via the wireless transceiver interface 54. The wireless transceiver 1 hall includes a host interface 162, a baseband processing module 164, a memory hall, a complex wireless frequency (10), a transmitter purchase π, a transmit/receive (T/R) module m, a complex antenna 182_186, and a plurality of antennas. 176-180 and local Zhenmail 〇) module. It is difficult to deal with the operation instructions stored in the memory (6), and the digital receiver function and the digital transmitter are separated. Digital receiver functions include, but are not limited to, digital intermediate frequency to baseband conversion, demodulation, combined demapping, decoding, de-interleaving, fast Fourier transform, and periodic pre-removal (c(10)^2 Re val ), spatial domain and time domain decoding, and/or normalization (descmmbling). Digital transmitter functions include, but are not limited to, scrambling, encoding, crossover, combined mapping, modulation, inverse fast Fourier transform, periodic preamble, spatial and temporal encoding, and/or digital baseband Conversion to = IF. The baseband processing module 164 can be implemented by one or a plurality of processing devices 21 1261429. This destroys the financial sin _, financial equipment, micro-computer, central processing unit digital u tiger r #,, 耘 耘 gate array, programmable logic = logic circuit, analog circuit, digital circuit, and / bite The money can be processed based on the _ instruction (_ and / or digital ^ 忆 166 can be a single memory or multiple memory. This memory can only sigh: coffee, random access memory, volatile memory, non-volatile Memory, static energy, dynamic memory, flash memory, and/or any device with a memory number I ^ function. Note that when processing module 64 is used by static machine, analog circuit, Newwei, and / or · circuit execution - a number of money, the memory of the storage communication operation instructions are embedded in the circuit including static machine, _ circuit, digital circuit, and / or logic circuit. In operation, the wireless transceiver 160 borrows The outbound data stream m is received by the host interface 162 from the host. The baseband processing module 164 receives the outbound data stream 188 and generates one or a plurality of outbound symbol streams (10) based on the mode selection signal 2〇2, each of the outbound symbol streams including 0FDM building. Mode selection signal The specific φ mode indicated by the elapsed is specified in the mode selection table. For details, see the end of this article. For example, the mode selection L No. 202 'can be seen as shown in Table 1 is 2 4 GHz, channel bandwidth % or 22 MHz, and maximum bit rate 54 Millions of bits per second. In the usual type, the 选择 selection signal also indicates a specific frequency range from ! megabits per second to 54 megabits per second. In addition, the mode selection signal indicates the specific type of modulation. , including but not limited to 'Buck code modulation, BPSK, QPSK, CCK, 16QAM, 22 1261429 and / or 64QAM. As shown in the table, the coding rate · · each 〇 FDM sub-band frequency - the number of data bits ( NBPSC), the number of coded bit ones (NCBPS) in each OFDM symbol, the number of bits of data bits (NDBPS) to be included in each OFDM symbol, the error vector magnitude (EVM) in decibels, indicating requirements The sensitivity of the maximum reception capacity of the target packet error rate (for example, 10% in IEEE802.11a), adjacent channel rejection (ACR), and alternate adjacent channel rejection (AACR) are obtained. Mode selection signal 202 Also shows the specific channelization method, In the communication mode, the communication mode used for the information in Table 1 is described in Table 2. As shown in Table 2, the number of channels and the communication center frequency are included in Table 2. The mode selection signal C is in the form of a table. The power spectral density (PSD) mask code value shown in Table 3. The mode selection signal 2 〇 2 can represent the 5 GHz band, the 20 MHz channel bandwidth, and the maximum bit _ % in Table 4. The rate value of each megabyte per heart. If the specific mode selection has been determined, the table $ indicates the remote selection of its carrier. Avoiding the selection, as shown in Figure 6, the mode selection signal 1〇2 can represent the 2 out of the band. 20 read channel bandwidth and a maximum bit rate of 192 megabits per second. A large number of antennas can be used to achieve higher bandwidth in Figure 6. In this example, the 'plate selection' also indicates the number of antennas used. Table 7 illustrates the carrier_selection used in Table 6. Table 8 shows a table 8 corresponding to another selection mode in the case of the 24 GHz band, the channel bandwidth, and the large bit rate of 192 megabits per second, including the use of 2_4 antennas and the space time represented in the table. 1261429 The coding rate is expressed in terms of bit rate from 12 megabits per second to m megabits per second. Table 9 shows the selection of carriers for Table 8. The mode selection signal plus- can be used to indicate the specific operation mode not shown in Table 10. Corresponding to the outgoing frequency band, it has a 4 〇 MHz band, a 4 〇 channel bandwidth, and a maximum bit rate of 1 million bits per second. As shown in Table 1G, _ M antennas and the corresponding communication space time coding rate, the bit rate can vary from 135 megabits per second to megabits per second. Table (1) also shows the specific coding configuration coding rate and SC value. Table 11 gives the power error density mask code values for Table 10, and Table 12 gives the selection of the carrier of Table 10. The baseband processing module 164, based on the mode selection signal 2〇2, generates one or a plurality of outbound symbol streams w from the outbound material I88', which just includes the 〇FDM block in the text. For example, if the mode selection signal is transmitted to the specific mode that has been selected, the baseband processing module 164 will generate a single outbound symbol stream. Alternatively, if the mode selection signal is indicated or the 4 antenna 'baseband processing module is removed from the outbound data (10), a 2, 3 or 4 outbound symbol stream 190 corresponding to the number of antennas is generated. Depending on the number of outbound symbol streams (10) generated by the baseband processing module 164, the corresponding number of RF transmitter pulses 172 will be used to convert the outbound symbol stream (10) into an outbound RF signal 192. The transmit/receive module 174 receives the outbound station number 192' for the outbound station to provide the communication antenna (8) loss. The field hotline transceiver 1116G is at the mode level t, the Wei/Pure module 174 24 1261429 receives one or more inbound RF signals via the antennas 182-186, and the transmit/receive module 174 is one or a plurality of RF receivers 176- 180 provides an inbound rf signal 194. The RF receivers 176-180 convert the input RF signal 194 into communication material corresponding to the inbound signal stream 196 including the OFDM frame described herein. The number of inbound signal streams 196 corresponds to the particular mode of data reception (this mode can be any of the modes represented by table M2). The baseband processing module ι64 receives the inbound symbol stream 190 and converts it into an inbound data stream 198 that is provided to the host 18-32 by the host interface 162. As is known to those skilled in the art, the wireless communication device of Figure 11 can be implemented using one or a plurality of integrated circuits. For example, the host device can be implemented on an integrated circuit, the baseband processing module 164 and the memory 166 can be implemented in the second integrated circuit, and the remaining components of the wireless transceiver 16A other than the antenna 182_186 can be in the second integrated circuit. Implemented on. In another embodiment, the wireless transceiver pair can be implemented on a single integrated circuit. As another example, the processing module 5 〇 and the baseband processing module 164 of the host device may be shared processing devices on a single integrated circuit. Further, the 'memory 52 and the memory 166 can be implemented on the integrated circuit of the single integrated circuit and/or the processing module 5 and the general processing module of the baseband processing module 164. As is known to those of ordinary skill in the art, as used herein, the term "sufficiently or "approximately" provides a correlation between industrially compatible compatible communication terms or operations. This industry allows compatibility ranges from less than 1261429 i% to 2G%' and corresponding but secret, component values, integrated circuit processing variations, temperature variations, rise and fall times, and/or thermal noise. This kind of phase ship varies from a small percentage difference to a large number of poles. It will also be appreciated by those skilled in the art that the term "operable connection" includes direct connection and indirect connection by other elements, elements, circuits, or modules, however, splicing, interacting elements, elements, circuits or The module does not modify the current level, the power level, and/or the energy level. As is known to those skilled in the art, the inferential connection (ie, the component is connected to the other by the interface) A component) includes a direct and indirect connection between components, that is, "can be connected." One of ordinary skill in the art will recognize that the term "effective comparison" as used herein refers to a comparison of two or more components, terms, and signal materials, providing a predictable connection. For example, it can be foreseen that the signal is greater than the signal 2 by a greater order of magnitude, that is, when the number of miles of the field 1 is greater than the magnitude of the signal 2 or when the magnitude of the signal 2 is smaller than the signal 1 A valid comparison can be obtained. The above-mentioned a-inch theory discloses various methods and preparations for generating and receiving 〇FDM frames. Other embodiments may be derived from the methods taught by the present invention without departing from the scope of the appended claims. Mode selection table:

Bit rate modulation coding rate NBPSC NCBPS NDBPS EVM aPL sensitivity ACR AACR 26 1261429 1 Barker BPSK 2 Barker QPSK 5.5 CCK 6 BPSK 0.5 1 48 24 -5 -82 16 32 9 BPSK 0.75 1 48 36 -8 -81 15 31 11 CCK 12 QPSK 0.5 2 96 48 -10 -79 13 29 18 QPSK 0.75 2 96 72 -13 -77 11 27 24 16-QAM 0.5 4 192 96 -16 -74 8 24 36 16-QAM 0.75 4 192 144 -19 - 70 4 20 48 64-QAM 0.666 6 288 192 -22 -66 0 16 54 64-QAM 0.75 6 288 216 -25 -65 -1 15 Table 2: Carrier channel selection channel frequency (MHz) 1 2412 2 2417 3 2422 4 2427 5 2432 6 2437 7 2442 8 2447 9 2452 10 2457 11 2462 12 2467 Table 3: Power Spectral Density (PSD) mask code for Table 1 Power Spectral Density Mask Code Frequency Offset ldBr -9MHz~9 MHz 0 +/-11 MHz 20 +/-20 MHz -28 +/-30 MHz and greater -50 Table 4: 5 GHz, 20 MHz channel bandwidth, 54 Mbps maximum bit rate

ΊίΊ^^"""I NBPSC I NCBPS I NDBPS I EVM I Spirit I ACR I AACR 27 1261429 Rate Rate Sensitivity 6 BPSK 0.5 1 48 24 -5 -82 16 32 9 BPSK 0.75 1 48 36 - 8 -81 15 31 12 QPSK 0.5 2 96 48 -10 -79 13 29 18 QPSK 0.75 2 96 72 -13 -77 11 27 24 16-QAM 0.5 4 192 96 -16 -74 8 24 36 16-QAM 0.75 4 192 144 -19 -70 4 20 48 64-QAM 0.666 6 288 192 -22 -66 0 16 54 64-QAM 0.75 6 288 216 25 -65 -1 15 Table 5: Selection of carrier for Table 4

Channel frequency (MHz) National channel frequency (MHz) Country 240 4920 Japan 244 4940 Japan 248 4960 Japan 252 4980 Japan 8 5040 Japan 12 5060 Japan 16 5080 Japan 36 5180 USA/Europe 34 5170 Japan 40 5200 USA/Europe 38 5190 Japan 44 5220 USA/Europe 42 5210 Japan 48 5240 USA/Europe 46 5230 Japan 52 5260 USA/Europe 56 5280 USA/Europe 60 5300 USA/Europe 64 5320 USA/Europe 100 5500 USA/Europe 104 5520 USA/Europe 108 5540 USA/Europe 112 5560 USA/Europe 116 5580 USA/Europe 120 5600 USA/Europe 124 5620 USA/Europe 128 5640 USA/Europe 132 5660 USA/Europe 136 5680 USA/Europe 140 5700 USA/Europe 149 5745 USA 153 5765 USA

28 1261429

157 5785 USA 161 5805 USA 165 5825 USA Table 6: 2.4 GHz, 20 MHz channel bandwidth, 192 Mbps maximum bit rate bit rate TX Antenna ST code rate modulation coding rate NBPSC NCBPS NDBPS 12 2 1 BPSK 0.5 1 48 24 24 2 1 QPSK 0.5 2 96 48 48 2 1 16-QAM 0.5 4 192 96 96 2 1 64-QAM 0.666 6 288 192 108 2 1 64 - QAM 0.75 6 288 216 18 3 1 BPSK 0.5 1 48 24 36 3 1 QPSK 0.5 2 96 48 72 3 1 16-QAM 0.5 4 192 96 144 3 1 64-QAM 0.666 6 288 192 162 3 1 64-QAM 0.75 6 288 216 24 4 1 BPSK 0.5 1 48 24 48 4 1 QPSK 0.5 2 96 48 96 4 1 16 -QAM 0.5 4 192 96 192 4 1 64-QAM 0.666 6 288 192 216 4 1 64-QAM 0.75 6 288 216 Table 7: Carrier channel selection channel frequency (MHz) 1 2412 2 2417 3 2422 4 2427 5 2432 6 2437 7 2442 8 2447 9 2452 10 2457 11 2462 12 2467 29 1261429 Table 8: 5 GHz, 20 MHz channel bandwidth, 192 Mbps maximum bit rate bit rate TX antenna ST code rate modulation coding rate NBPSC NCBPS NDBPS 12 2 1 BPSK 0.5 1 48 24 24 2 1 QPSK 0.5 2 96 48 48 2 1 16-QAM 0.5 4 192 96 96 2 1 64-QAM 0.666 6 288 192 108 2 1 64-QAM 0.75 6 288 216 18 3 1 BPSK 0.5 1 48 24 36 3 1 QPSK 0.5 2 96 48 72 3 1 16-QAM 0.5 4 192 96 144 3 1 64-QAM 0.666 6 288 192 162 3 1 64-QAM 0.75 6 288 216 24 4 1 BPSK 0.5 1 48 24 48 4 1 QPSK 0.5 2 96 48 96 4 1 16-QAM 0.5 4 192 96 192 4 1 64-QAM 0.666 6 288 192 216 4 1 64-QAM 0.75 6 288 216

Table 9: Selection of carrier for Table 8

Channel frequency (MHz) National channel frequency (MHz) Country 240 4920 Japan 244 4940 Japan 248 4960 Japan 252 4980 Japan 8 5040 Japan 12 5060 Japan 16 5080 Japan 36 5180 USA/Europe 34 5170 Japan 40 5200 USA/Europe 38 5190 Japan 44 5220 USA/Europe 42 5210 Japan 48 5240 USA/Europe 46 5230 Japan 52 5260 USA/Europe 56 5280 USA/Europe 60 5300 USA/Europe 64 5320 USA/Europe 100 5500 USA/Europe 104 5520 USA/Europe 108 5540 USA/Europe 112 5560 USA/Europe 30 1261429

116 5580 USA/Europe 120 5600 USA/Europe 124 5620 USA/Europe 128 5640 USA/Europe 132 5660 USA/Europe 136 5680 USA/Europe 140 5700 USA/Europe 149 5745 USA 153 5765 USA 157 5785 USA 161 5805 USA 165 5825 USA

Table 10: 5GHz, and 40MHz channels and 486Mbps maximum serial transmission bit rate bit rate TX antenna ST code rate modulation coding rate NBPSC 13.5Mbps 1 1 BPSK 0.5 1 27Mbps 1 1 QPSK 0.5 2 54Mbps 1 1 16-QAM 0.5 4 108Mbps 1 1 64-QAM 0.666 6 121.5Mbps 1 1 64-QAM 0.75 6 27Mbps 2 1 BPSK 0.5 1 54Mbps 2 1 QPSK 0.5 2 108Mbps 2 1 16-QAM 0.5 4 216Mbps 2 1 64-QAM 0.666 6 243Mbps 2 1 64- QAM 0.75 6 40.5Mbps 3 1 BPSK 0.5 1 81Mbps 3 1 QPSK 0.5 2 162Mbps 3 1 16-QAM 0.5 4 324Mbps 3 1 64-QAM 0.666 6 365.5Mbps 3 1 64-QAM 0.75 6 54Mbps 4 1 BPSK 0.5 1 108Mbps 4 1 QPSK 0.5 2 216Mbps 4 1 16-QAM 0.5 4 432Mbps 4 1 64-QAM 0.666 6 486 Mbps 4 1 64-QAM 0.75 6

Table 11: Power Spectral Density Mask Code Power Spectral Density Mask Frequency Offset of Table 10 | 2dBr 31 1261429 -9MHz~9 MHz —--—___ 0 +/-21 MHz -20 +/-30 MHz —~ ~~—-— -28 +/-40 MHz and greater 50

Table 12 · Selection of carrier of Table 10

Channel Frequency (MHz) National Channel Frequency (MHz) 242 4930 Japan 250 4970 Japan 12 5060 Japan ----___------- 38 5190 USA/Europe 36 5180 46 5230 USA/Europe 44 5520 54 5270 USA/ Europe 62 5310 USA/Europe ______----- 102 5510 USA/Europe ______— 110 "5550 USA/Europe ------- 118 5590 USA/Europe ~~~~~~~~~~--- ---- 126 5630 USA/Europe ___________________ —- 134 5670 USA/Europe ------ ---- 151 5755 ------- USA ---- ---- 159 5795 USA

BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a schematic diagram of subcarrier allocation of an existing OFDM frame; the first figure is a structure of a wireless communication system for generating an orthogonal frequency division multiplexing frame in wireless communication according to the present invention. Block diagram; FIG. 2 is a structural block diagram of a wireless communication device for generating an orthogonal frequency division multiplexing tilting device and method in the wireless communication of the present invention; and the fourth figure is an orthogonal frequency division generated in the wireless communication of the present invention. Schematic diagram of wireless communication using a device and method for frames; FIG. 5 is a schematic diagram of OFDM frame subcarrier allocation for an apparatus and method for generating orthogonal frequency division multiplexing frames in wireless communication according to the present invention; 32 1261429 A schematic diagram of another OFDM duck subcarrier allocation of the device and the method for generating an orthogonal frequency division mask of the present invention; : a comparison table of the seven-picture system 4 802.11a and the narrow channel application of the present invention; The schematic diagram of the OFDM baseband signal and the corresponding DC notch filter for the device and method for generating orthogonal frequency division for the hotline communication towel of the present invention; the ninth figure is orthogonal to the wireless communication towel of the present invention. A schematic diagram of a device and method for frequency division multiplexing in (5) a sub-carrier allocation of a narrow channel; a tenth figure is a multi-input and multi-output device and method for generating an orthogonal frequency division multiplexing frame in wireless communication according to the present invention; The block diagram of the wireless communication system; the tenth figure is a block diagram of the structure of the wireless communication device for generating the orthogonal frequency division multiplexing frame in the wireless communication of the present invention. [Description of main component symbols] Communication system 10 base station or Access points ^2,14,16 Laptop mainframe 18, 26 Personal digital assistant host 20, 3 〇 Mobile phone host 22, 28 Personal computer host 24, 32 Network hardware 34 Regional network connection 36, 38, 40 WAN Connection 42 Processing Core Group 50 Memory 52, 75 Wireless Transceiver Interface 54 Output Interface 56 Input Interface 58 Wireless Transceiver 60 Host Interface 62 Digital Receiver Processing Module 64 Analog Digit Converter 66 1261429 Filter/Gain Module 68, 80 Receiver filter, wave module 71 transmit and receive transfer switch 73 digital transmitter processing module 76 receiver local vibration signal transmitter local oscillation signal 83 Transmitter Filter Module 85 Inbound RF Signal 88 Inbound Data 92 Outbound Baseband Signal 96 Transmitter 100 OFDM Frame 104 Data Section 108 k Information 112 Wireless Transceiver 160 Memory 166 T/R Module 174 Antenna 182 184, 186 Outbound symbol stream 190 Inbound RF signal 194 Input data 198 IF hybrid down conversion module 70 Low noise amplifier 72 Local vibrating module 74 Digital analog converter 78 IF hybrid up conversion module 82 Power amplifier 84 Antenna 86 Inbound Baseband Signal 90 Outbound Data 94 Outbound RF Signal 98 Receiver 102 Preamble 106 Training Information 110 Data Fields 114, 116, 118 Baseband Processing Module 164 RF Transmitter 168, 170, 172 RF Receiver 176 178, 180 Output data 188 Outbound RF signal 192 Inbound symbol stream 196 LO module 200 1261429 Mode selection signal 202

35

Claims (1)

1261429 X. Patent application scope: 1. A method for generating Orthogonal Frequency Division Multiplexing (OFDM) frames for wireless communication includes the following steps: generating orthogonal frequency division multiplexing frames Pre-data, wherein the pre-data includes training information and signal information; and a data block for generating a plurality of orthogonal frequency division multiplexing frames, wherein each data column includes a plurality of subcarriers, wherein at least part of the data blocks includes at most three It is assigned a subcarrier with control "is. 2. The method for generating an orthogonal frequency division multiplexing frame for wireless communication according to claim 1, wherein the method further comprises: transmitting the orthogonal frequency division multiplexing frame in a narrowband channel, wherein the narrowband The channel has a channel width of less than 2 megahertz (111 sing 3-1^11; 2). 3. The method for generating an orthogonal frequency division multiplexing frame for wireless communication according to claim 1, wherein the generating the plurality of data intercepting steps comprises: using each of the at least partial data intercepting subcarriers +7 and -7 to pass the data, and zero the subcarriers +1 and _丨 for each of the at least some of the data blocks. 4. The method for generating an orthogonal frequency division multiplexing frame for wireless communication according to claim 1, wherein the generating the plurality of data intercepting steps comprises: using a subcarrier of each of the at least part of the data column +21 and -21 to pass the data, and zero the subcarriers +1 and _丨 for each of the at least part of the data column. 5. The method for generating an orthogonal frequency division multiplexing frame for wireless communication according to claim 1, wherein the generating the plurality of data intercepting steps comprises: 1261429 = mother: at least part of a plurality of data blocks Zeroing the carrier +1 and -1 bits; at least part of the data interception, using the subcarriers +7 and -7 to transfer the data; and using at least another of the at least part of the data, using the subcarrier And to pass the information. 6. The method of generating an orthogonal frequency division multiplexing method for wireless communication as described in item i, wherein the generating the preamble data comprises: generating signal information to indicate which of the plurality of subcarriers The frequency will assign a control signal. a method for generating an orthogonal frequency division _ for wireless communication, such as: converting a data stream into a plurality of data streams; and Converting the complex data stream into a complex orthogonal frequency division multiplexing frame, wherein each of the positive parent frequency division multiplexing blocks includes preamble data having training information and signal information, and each of the orthogonal frequency divisions The multiplexing building includes a complex data column, each of the positive frequency 77 multiplexed 贞5 贞 data includes a plurality of subcarrier frequencies, wherein at least part of the orthogonal frequency division complex 贞 data block includes at most three of the assigned control signals 8. The method of generating an orthogonal frequency division multiplexing frame for multiple input and multiple output wireless communication according to claim 7, wherein at least part of the data frame of the orthogonal frequency division multiplexing frame includes : 1261429 Subcarriers +7 and -7 to transmit data and each subcarrier +21 and -21 to transmit control signals. ~ 9, - , as described in claim 7 for multi-input and multi-output wireless communication Method for generating a positive parent frequency division multiplexing frame, where orthogonal frequency division The at least part of the data block of the multiplex frame includes: then the carriers +21 and -21 transmit the data and the +7 and -7 bits of each subcarrier to transmit the control signal. 10. As described in claim 7 A method for generating a MIMO orthogonal frequency division multiplexing frame for multi-input and multi-output wireless communication, wherein the at least part of the data interception of the orthogonal frequency division multiplexing frame comprises: using at least one of the at least part of the data intercept, using the subcarrier +7 and _7 to transmit data, and to transmit data to at least one of the at least part of the data fields, using subcarriers +21 and _21. 11. For multi-entry as described in claim 7 The method for generating a wireless communication OFDM orthogonal OFDM frame further includes: generating a signal homing to indicate which of the plurality of subcarrier frequencies is to be assigned as a control signal. 12. As claimed in claim 7 The method for generating a parent frequency division m贞 by wireless communication, wherein the step of converting the complex data stream into a complex orthogonal frequency division multiplexing frame includes: 38 1261429 generating a first orthogonal frequency Sub-multiplexed frame, the first positive The cross-frequency division multiplexing frame includes a complex data field having four control signals, and generates remaining Orthogonal Frequency Division Multiplexing frames, the remaining orthogonal frequency division multiplexing frames including complex data of less than four control signals 13. A method for receiving an orthogonal frequency division multiplexing frame for wireless communication, the method comprising: receiving preamble data of the orthogonal frequency division multiplexing frame, wherein the preamble data includes training information And a signal information; _ receiving a plurality of data blocks of the orthogonal frequency division multiplexing frame, wherein each of the data blocks includes a plurality of subcarriers, wherein at least part of the data column indicated by the signal information includes at most three The subcarrier frequency to which the control signal is assigned; and converting the complex data column to internal data. 14. The method for receiving an orthogonal frequency division multiplexing frame for a radio orbit as described in claim 13 of the claim, further comprising: The stalk receives the OFDM frame from a narrow bandwidth channel, wherein the π 觅 channel has a channel width of less than twenty a megahertz. 15. The method as claimed in claim _n as in the no-received positive multiplex method, wherein the step of receiving the complex data block further comprises: sub-carriers from each of the at least partial data blocks +7 and 39 1261429. The method of receiving orthogonal frequency division of wireless communication according to Item 13, wherein said receiving said plurality of data blocks comprises:, 7 recovering data; and 1 recovering zero data. The frequency division f--the at least part of the data intercepted subcarriers +7 and _ from each of the at least part of the #substance subcarriers +1 and _17,:;:=_13 said _^^^ In the method, the receiving the data intercepting step includes: feeding; and L, shelling, recovering from the subcarriers +7 and -7; 18 = less - the smoke is increased by _, from the sub-load (four) (four) complex data The method for receiving orthogonality for multi-person and multi-output wireless communication includes: a method of frequency division multiplexing frame, receiving a number of positive-female frequency division multiplexing frames, and smashing 4 anvils, and thousands The mother-father-father frequency division multiplexing frame includes a pre-Beibei with 3 Sichuan, Dongbei and signal information, and the mother-orthogonal frequency division multiplexing frame includes the number of —-Bei-Bai, each 沭. ^ The positive-father frequency 7-knife multiplexed frame data block includes a plurality of sub-carrier frequencies, wherein the complex-crossing frequency-resetting information of at least one of the decent control signals that cannot be output by the signal is included The three are divided into: a number of subcarrier frequencies; the plurality of frequency divisions are divided into __jumps «streams; and the plurality of data streams are converted into one data stream. 40 1261429. The method of receiving a positive frequency multiplexed duck for multi-input and multi-output wireless communication according to claim 18, wherein at least one of the plurality of orthogonal frequency division multiplexing blocks Part of the complex data includes: Field 1J carrier +7 and -7 to transmit data and each subcarrier +21 and _21 to transmit control signals. The method for receiving an Orthogonal Frequency Division Multiplexing (OFDM) frame for multiple-input multiple-output wireless communication according to the above-mentioned claim, wherein at least part of the complex data of the at least one complex OFDM frame The block includes: Xin subcarriers +21 and -21 to transmit data and each subcarrier +7 and -7 to transmit control signals. The method for receiving an Orthogonal Frequency Division Multiplexing (OFDM) frame for multi-input and multi-output wireless communication according to claim 18, wherein at least one of the at least one complex OFDM frame The plurality of data blocks includes: for at least one of said at least partial plurality of data fields, recovering tributaries from sub-loads +7 and -7, and ^ for at least one of said at least part of said plurality of data columns, from subcarriers +21 and -21 Recovery data. 22. The method for receiving an Orthogonal Frequency Division Multiplexing (OFDM) frame for multiple input and multiple outgoing wireless communication according to claim 18, wherein the complex orthogonal frequency division multiplexing frame comprises: a first orthogonal frequency The sub-multiplexed frame includes the complex data having four control signals, and 41 1261429 L, the human frequency division multiplexing frame includes the complex-to-poor block having less than four control signals. 23, a type of radio frequency transmitter, comprising: a base processing module, connectable for generating orthogonal frequency division multiplexing frames, by generating a preamble of the orthogonal frequency division multiplexing frame, The pre-data includes training information and signal information, and a plurality of data blocks for generating the orthogonal frequency division multiplexing block, wherein each of the plurality of data blocks includes a plurality of subcarriers, wherein at least part of the plurality of data blocks The plurality of subcarrier frequencies to which the control signal is assigned are coupled to the radio frequency transmitting portion for converting the orthogonal frequency division multiplexing frame into an output RF signal. 24. The radio frequency transmitter of claim 23, further comprising: generating a narrow bandwidth channel for transmitting the orthogonal frequency division multiplexing frame, wherein the narrowband see channel has less than twenty million Hertz's channel width. 25. The radio frequency transmitter of claim 23, wherein the generating the _ complex data block comprises: transmitting the tribute by using at least part of the plurality of sub-carriers +7 and _7 of the data block And each of the at least part of the plurality of data intercepted subcarriers +1 and ―丨 zero. 26. The radio frequency transmitter of claim 23, wherein the generating the plurality of data fields comprises: 42 1261429 ^ mother - at least part of the sub-carriers of the plurality of data columns + 21 and - 21 to convey The tribute; and the 27 jins to the partial data block of the sub-load +1 and · 1 zero. , please call the _23 item Chengzhi _ hair (four), its number of tribute blocks include:: the sub-load S+1 and -1 zero of the plural data column of the nuclear part; 7 = to ^ At least part of the plurality of data blocks, using subcarriers +7 and _7 to transmit data; and to the other at least part of the plurality of data fields, using subcarriers +21 and to transmit data. , Shen. The radio frequency transmission || described in item 23 of the patent of Feu, wherein the generating the pre-data includes: generating the signal information to indicate which of the plurality of sub-carrier frequencies will distribute the control signal. 29. An RF transmitter, comprising: a base V processing her, can be coupled to generate an orthogonal frequency division multiplexing frame for multi-person wireless communication, by: converting a data stream into a complex data stream, and Converting the complex data stream into a complex orthogonal frequency division multiplexing frame, wherein each orthogonal frequency division multiplexing frame includes preamble data with training information and signal information, and each orthogonal frequency division multiplexing frame includes a plurality of data blocks, wherein each of said plurality of positive radii multiplexed sheds includes a plurality of sub-chopping frequencies, wherein at least one of said complex Orthogonal Frequency Division Multiplexing frames At least a portion of the complex/data column includes at most three complex subcarrier frequencies to which a control signal is assigned; and a radio frequency transmitting portion operative to convert the complex OFDM frame into a complex output RF signal. 30. The radio frequency transmitter of claim 29, wherein at least part of the plurality of complex orthogonal frequency division multiplexing frames comprises: xin subcarriers +7 and -7 transmitting data And each subcarrier +21 and -21 transmits a control signal. 31. The radio frequency transmitter of claim 29, wherein the at least one of the plurality of complex orthogonal frequency division multiplexing frames has at least a portion of a plurality of data fields, including: subcarriers +21 and -21 transmitting data and Each subcarrier +7 and _7 transmits a control signal. 32. The radio frequency transmitter of claim 29, wherein the at least one of the complex data columns of at least one of the plurality of orthogonal frequency division multiplexing frames comprises: for at least one of the at least one portion The complex data field transmits data using subcarriers +7 and -7; and transmits data using at least another of said at least partial data blocks using subcarriers +21 and -21. 33. The radio frequency transmitter of claim 29, wherein the baseband 44 1261429 module further has the following functions: - generating the signal information to indicate which of the plurality of subcarrier frequencies will be divided , send control signals. 34. The radio frequency transmitter of claim 29, wherein the converting the complex data stream into a complex OFDM frame comprises: generating a first OFDM frame comprising four controls The plurality of lean packets of the signal are placed; and the generating the remaining positive-parent frequency division multiplexing frame includes a sequence of multiple data blocks having less than four control signals. 35. A radio frequency receiver, comprising: the radio frequency receiving part can be used as an orthogonal frequency division multiplexing frame; and the baseband processing module can be connected to receive the orthogonal frequency division multiplexing Pre-data of the frame, wherein the pre-data includes training information and signal information; and a plurality of data blocks that receive the orthogonal frequency division complex, wherein each of the resetting sides includes a plurality of subcarrier frequencies, wherein , by the assignment of the signal f, the complex data block includes at most three complex subcarrier frequencies to which one control signal is assigned; and converts the complex data column into input data. The RF receiver of claim 35, wherein the RF transceiver 45 1261429 is further configured to receive an orthogonal frequency division by a narrowband channel, wherein the narrowband channel bandwidth is less than 20 MHz. 37. The radio frequency receiver of claim 1 , wherein the receiving the plurality of data blocks comprises: restoring data by sub-carriers +7 and _7 of each of said at least part of said plurality of data blocks And recovering null data by subcarriers +1 and "" of each of said at least partial complex data blocks. _ 38. The radio frequency receiver as claimed in claim 35, wherein the receiving the plurality of data blocks comprises: recovering from the subcarriers +21 and _21 of each of the at least part of the plurality of data blocks And recovering zero data from subcarriers +1 and -1 of each of said at least partial complex data blocks. 39. The radio frequency receiver according to claim 35, wherein the receiving the lure data block comprises: recovering zero from each of the at least part of the plurality of sub-carriers +1 and _1 of the data block Data; recovering data from at least one of said at least partial complex data blocks from subcarriers +7 and _7; and recovering from at least one of said at least one of said plurality of data blocks, recovering from subcarriers +21 46 1261429 and -21. data. 40. A radio frequency receiver, comprising: a receiving part for multi-input and multi-output wireless communication, which can be connected to convert a input RiM speech into a complex orthogonal frequency division multiplexing frame; and a baseband processing module can be connected for Receiving the complex OFDM frame, wherein each OFDM frame includes preamble data having training information and signal information, wherein each of the complex OFDM frames includes a plurality of data columns, wherein each of said data blocks of said complex orthogonal frequency division multiplexing multiplex includes a plurality of subcarrier frequencies, wherein at least one of said complex Orthogonal Frequency Divisions is assigned by signal information At least a portion of the plurality of data blocks of the multiplex frame includes at least three complex subcarrier frequencies to which a control signal is assigned; converting the complex OFDM frame into a complex data stream; and The complex lean stream is converted into a data stream. 41. The radio frequency receiver of claim 40, wherein the at least one of the plurality of complex orthogonal frequency division multiplexing frames comprises at least a portion of the data block comprising: subcarriers +7 and -7. The data and each subcarrier +21 and _21 are transmitted to transmit the control signal. 42. The radio frequency receiver of claim 40, wherein at least part of the plurality of data fields of the at least one complex OFDM frame comprises ·· subcarriers +21 and -21 for transmitting data And each subcarrier +7 and _7 to transmit control 47 1261429 signal. 43. The radio frequency receiver of claim 4, wherein the at least one of the plurality of complex orthogonal frequency division multiplexing frames comprises: at least one of the at least one of the plurality of data blocks And recovering the poor material from the subcarriers +7 and _7; and recovering the data from the subcarriers +21 and -21 for at least one of the at least one of the plurality of data blocks. 44. The radio frequency receiver of claim 40, wherein the complex positive cross-frequency division multiplexing frame comprises: the first orthogonal frequency division multiplexing frame comprising the plurality of tributaries having four control signals The shed, and the parent-remaining orthogonal frequency division multiplexing frame includes the complex data block having less than four control signals. 48