CN102090016B - For the physical layer frame format design of system of broadband wireless communication - Google Patents

For the physical layer frame format design of system of broadband wireless communication Download PDF

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Publication number
CN102090016B
CN102090016B CN200980126648.0A CN200980126648A CN102090016B CN 102090016 B CN102090016 B CN 102090016B CN 200980126648 A CN200980126648 A CN 200980126648A CN 102090016 B CN102090016 B CN 102090016B
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signal
carrier
payload part
receiving
signal receiving
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CN102090016A (en
Inventor
张鸿远
R·U·纳巴尔
A·D·M·帕拉尼维鲁
H-L·娄
吴松平
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Kaiwei International Co
Marvell International Ltd
Marvell Asia Pte Ltd
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Mawier International Trade Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal

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

Abstract

The system and method for processing the payload part of this signal receiving at single carrier mode or multi-carrier mode is provided for a part for the signal based on receiving. Receive single carrier signaling moiety with first rate, and the payload part of detection signal is single-carrier signal or multi-carrier signal from received single carrier signaling moiety. Receive the payload part of received signal with described first rate, and the payload part of determining the signal receiving when described detection decodes to it while being single-carrier signal in single carrier mode, and the payload part of determining the signal receiving when described detection while being multi-carrier signal in multi-carrier mode payload part to the received signal decode.

Description

For the physical layer frame format design of system of broadband wireless communication
The cross reference of related application
The application is the U. S. application number 12/410,883 that is filed on March 25th, 2009Part continues, this by reference entirety be incorporated to herein. The application also requires to be filed in 2008The priority of the U.S. Provisional Application on July 8, number 61/078,952, at this by referenceEntirety is incorporated to herein. Be filed in the U.S. Provisional Application number on April 8th, 200861/043,384, be filed in the U.S. Provisional Application number 61/044,816 on April 14th, 2008With the U.S. Provisional Application number 61/076,453 that is filed on June 27th, 2008 be also relevant, be incorporated to by reference herein at this.
Technical field
Described in this patent document, technology relates in general to broadband wireless communications, and is specifically related to thingReason layer frame format.
Background technology
The continuous progress of computer technology has for example increased people, for high data rate (, > 1Gbps) interest of radio communication and demand. These high data rate communication are usually by being usedWide bandwidth realizes. For example,, usually by coming by hundreds of MHz or a few GHz bandwidthRealize Gbps data rate. These large bandwidth are at the 60GHz frequency band such as without licence plateHigher carrier frequencies near all can use. Fig. 1 has described exemplary 60GHz frequency channels meterDraw 30. This 60GHz frequency channels plan 30 provides separately centered by near 60GHz4 channels 32 of about 2GHz. Although having the channel of wider bandwidth is large dataSpeed provides chance, even but channel conventionally on short distance, (for example, 10 meters following) alsoBe subject to time delay and scatter the impact of (time delay expansion).
There is the diversified technology that can utilize radio communication. Two kinds are generally applied as:Remote high data rate applications and low/middle data-rate applications of short distance. These application haveThey self merits and demerits.
In remote high data rate applications, realized high data rate, but system mayNeed to stand high latency expansion. High latency expansion has increased the complexity in transmitter and receiverDegree and power demand. The circuit with higher complexity often has larger than short-range deviceSpace requirement, and higher power demand is also more suitable in plug-in equipment instead of batteryEquipment. On the contrary, low/middle data-rate applications in short distance can be to have short delayThe sighting distance application (line-of-sightapplication) of distribution and lower power demand. These shouldBe used in conventionally may more holding in the lower complexity handheld portable wireless system of sensitive power consumptionEasily realize.
Fig. 2 A and Fig. 2 B have described respectively single carrier emitter 40 and single-carrier receiver 50Block diagram. In Fig. 2 A, encoder 42 receives input data 44 and these data is compiledCode is for transmission. The output of encoder 42 propagates into single-carrier modulated device 46, this modulator46 by encoded data integration on single carrier for transmitting through antenna 48. In Fig. 2 B,Receiver 50 receives single carrier wireless signal via antenna 52, and the signal receiving is passedBroadcast single carrier demodulation device 54. Single carrier demodulation device 54 extracts from the single-carrier signal receivingData, and the data of extraction are passed to decoder 56. Decoder 56 enters the data of extractingRow decoding, and make to can be used for circuit downstream through the data 58 of decoding.
Fig. 3 A and Fig. 3 B have described respectively multicarrier transmitter 60 and multi-carrier receiver 70Block diagram. In Fig. 3 A, encoder 62 receives input data 64 and data is encodedFor transmission. The output of encoder 62 propagates into multi-carrier modulator 66, this modulator 66By encoded data integration on multiple carrier waves for transmitting through antenna 68. In Fig. 3 B,Receiver 70 receives multi-carrier-wave wireless signal via antenna 72, and the signal receiving is passedBroadcast multicarrier demodulator 74. Multicarrier demodulator 74 is carried from the multi-carrier signal receivingFetch data, and the data that extract are passed to decoder 76. Decoder 76 is to extractingDecoding data, and make to can be used for circuit downstream through the data 78 of decoding.
Data modulation scheme is often more compatible with some application than other application. For example,OFDM (OFDM) is a kind of subcarrier multiplexing scheme, and it is owing to being convenient to frequency domain letterTrace equalization and be suitable for maintaining high data rate in the channel with large delay. This makesOFDM is compatible mutually with above-mentioned remote high data rate applications, because OFDM is at high latencyIn extended channel, provide relatively simple balanced, support farther distance, and support requiredHigh data rate.
But, the shortcoming relevant to OFDM scheme comprise relatively high hardware complexity andLower power efficiency. In the broadband system having such as the high carrier frequency of 60GHz,Power amplifier (PA) efficiency at emitter place and the analog-digital converter (ADC) at receiver placeBit wide be the challenge in engineering design. In addition, OFDM is at the signal wave of transmission and receptionIn shape, introduce high peak-to-average force ratio (PAPR), thereby on power amplifier and analog-digital converterOn operating point need larger surplus, this may reduce efficiency power amplifier and increase modulusThe complexity of converter design.
It should be noted that term multicarrier (MC) and OFDM modulation will be spreading all in the disclosureDiscussion everywhere in appearance, and be in most of the cases interchangeable. Therefore, in referenceWhen OFDM, also can use other multi-carrier modulation technologies. Similarly, for multicarrierThe reference of modulation comprises that OFDM implements.
Fig. 4 A and Fig. 4 B have described respectively OFDM emitter 80 and OFDM receiver 90Block diagram. In Fig. 4 A, encoder 82 receives input data 84 and data is encodedFor transmission. The output of encoder 82 propagates into OFDM modulator 86, this modulator 86By encoded data integration on multiple carrier waves for transmitting through antenna 88. In Fig. 4 B,Receiver 90 receives OFDM wireless signal via antenna 92, and to ofdm demodulator94 propagate the signal receiving. MC demodulator 94 extracts from the ofdm signal receivingData, and transmit to decoder 96 data that extract. Decoder 96 is to the number extractingAccording to decoding, and make to can be used for circuit downstream through the data 98 of decoding.
In the direct-view channel or other application that need lower data speed, there is time domain equalSingle carrier (SC) modulation of weighing apparatus is conventionally just enough. Single-carrier system can in conjunction withIn the hardware of low-power requirements and large transmission power efficiency, provide simplicity. Single-carrier modulated canShow constant envelope and/or low peak average ratio, thereby be convenient to power amplifier and analog-digital converterDesign. But single-carrier system need to be used for the complicated balanced device of high latency expansion conventionally,In fact limited the scope of high data rate transfer.
Summary of the invention
According to instruction herein, provide for the treatment of the institute that comprises payload part and signaling moietyThe system and method for the method for being carried out by processor of the signal receiving, the signal receivingSignaling moiety is single-carrier signal, the payload part of the signal receiving be single-carrier signal orPerson's multi-carrier signal. Described system and method can comprise with the first sample rate and receives and receivedThe signaling moiety of signal, and from the signaling moiety of received signal, detect receivedThe payload part of signal is single-carrier signal or multi-carrier signal. The signal receiving cleanLotus part can receive with the first sample rate, and in response to the payload portion of received signalDividing is single-carrier signal, and demodulation in single carrier mode, or in response to received letterNumber payload part be multi-carrier signal, and demodulation in multi-carrier mode. From receiveThe data of the payload part through demodulation of signal can in computer-readable memory, store upDeposit.
As another example, for transmit comprise payload part and signaling moiety signal beSystem, wherein the signaling moiety of the signal of transmission is single-carrier signal, and the payload part of signalBe single-carrier signal or multi-carrier signal, this system can comprise single-carrier modulated device, forAt least the signaling moiety of the signal to transmission is modulated; And multi-carrier modulator, forIn the time that system is in multicarrier modulus, the payload part of the signal of transmission is modulated to multicarrierSignal. Described system can also comprise clock, for the output to single-carrier modulated device and manyTotal sample rate is applied in the output of carrier modulator.
As another example, for the treatment of comprising receiving of payload part and signaling moietyThe system of signal, the signaling moiety of the signal that wherein received is single-carrier signal, and through connecingThe payload part of the signal of receiving is single-carrier signal or multi-carrier signal, and this system can compriseSignaling moiety analyzer, this analyzer is configured to receive with the first sample rate the letter being receivedNumber signaling moiety, and from the signaling moiety of received signal, detect received letterNumber payload part be single-carrier signal or multi-carrier signal. System can also comprise demodulationDevice, this demodulator is configured to receive with the first sample rate the payload part of the signal being received,And be single-carrier signal in response to the payload part of received signal, and at single carrier mouldIn formula, the payload part of received signal is carried out to demodulation, wherein this demodulator is also configuredBecoming is multi-carrier signal in response to the payload part of received signal, and at multi-carrier modeIn the payload part of received signal is carried out to demodulation. This system can also comprise computerReadable memory, this memory be configured to store from received signal through demodulationThe data of payload part.
Brief description of the drawings
Fig. 1 has described the plan of a kind of exemplary 60GHz frequency channels.
Fig. 2 A and Fig. 2 B have described the block diagram of single carrier emitter and single-carrier receiver.
Fig. 3 A and Fig. 3 B have described the block diagram of multicarrier transmitter and multi-carrier receiver.
Fig. 4 A and Fig. 4 B have described OFDM multicarrier transmitter and OFDM multicarrier connectsThe block diagram of receipts machine.
Fig. 5 A and Fig. 5 B have described the block diagram of single carrier emitter and dual-mode transmitter.
Fig. 6 A and Fig. 6 B have described single-carrier receiver and have comprised the decoding of packet synchronization device/headerThe block diagram of the multi-carrier receiver of device.
Fig. 7 A and Fig. 7 B have described to comprise the dual mode receiver of packet synchronization device/header decoderAnd second dual mode receiver.
Fig. 8 has described a kind of superframe structure for IEEE802.15.3cMAC.
Fig. 9 has described a kind of grouping of single-carrier modulated.
Figure 10 has described a kind of OFDM multi-carrier modulation grouping.
Figure 11 has described a kind of OFDM multicarrier of the OFDM of comprising channel estimation sequence and has adjustedSystem grouping.
It is leading that Figure 12 has described a kind of shared single carrier.
Figure 13 is the flow process of describing the detection to payload transmission pattern based on carrier wave sequence coverageFigure.
Figure 14 is the flow process of describing the detection to payload transmission pattern based on carrier wave frequency expansion sequenceFigure.
Figure 15 has described a kind of shared single carrier header.
Figure 16 has described a kind of OFDM multi-carrier modulation grouping, and this is grouped in shared single carrierHeader comprises OFDM channel estimation sequence and header afterbody.
It is 1.5 times of single carrier clock adopting that Figure 17 has described OFDM clock sampling rate whereinSample timing.
It is the sampling of 2 times of single carrier clock that Figure 18 has described wherein OFDM clock sampling rateRegularly.
Figure 19 has described a kind of for maintaining single-carrier portion and the multicarrier of received signalThe transmitter configuration of the coherent frequency spectrum between part.
Figure 20 has described a kind of OFDM multi-carrier modulation grouping, and it comprises OFDM channelEstimated sequence, this OFDM channel estimation sequence does not comprise single carrier channel estimated sequence.
Figure 21 has described a kind of OFDM multi-carrier modulation grouping, and it runs through single carrier and overloadingRipple part and with the sampling of same speed.
Figure 22 has described to run through SC and MC part and many with the OFDM of same speed samplingThe shared leading part of carrier wave grouping.
Figure 23 has described a kind of SC of running through and MC part and with the OFDM of same speed samplingMulticarrier grouping, wherein includes OFDM channel estimation sequence at the section start of MC part.
Figure 24 has described a kind of to share the single carrier grouping of SC/OFDM sample rate transmission.
Figure 25 has described a kind of to share the packet of SC/OFDM sample rate transmission, itsThere is the header of the transmission mode of depending on.
Figure 26 has described a kind of dual-mode transmitter, and it is configured to share SC/OFDM and adoptsSample rate transmission of data packets.
Figure 27 A and Figure 27 B have described a kind of single-carrier modulated grouping that comprises single carrier header,And comprise the OFDM overloading of the OFDM header that includes OFDM channel estimation sequenceRipple modulation grouping.
Figure 28 is the signaling moiety receiving of the signal based on the received single carrier mould of decodingThe flow chart of formula signal or multi-carrier mode signal.
Figure 29 is for transmit single carrier payload after the single carrier signaling moiety of signal transmissionOr the flow chart of the method for multicarrier payload.
Figure 30 be for after the single carrier signaling moiety of signal transmission with share single carrier/The flow chart of the method for multicarrier sample rate transmission single carrier payload or multicarrier payload.
Figure 31 shows the exemplary enforcement of one of the present invention.
Detailed description of the invention
Based on the application, in wireless network, can there is at least broadband device of three types: 1)Only SC equipment, such as simple hand-held, short distance, low-power equipment; 2) MC onlyEquipment, its target is the distance more grown and higher data rate, its unlike SC equipment only thatSample power sensitive and complexity; 3) dual-mode equipment, it utilizes single-carrier modulated and multicarrier simultaneouslyDebugging, its can control single carrier and multicarrier equipment the two or with its dialogue. These are variousCoexisting of the equipment of type may have problem, if particularly equipment can not intercom mutually,For example, only SC equipment may not with MC devices communicating only.
In order to alleviate these communication issues, can be for can be by the equipment profit of all three typesWith physical layer and use share leading/header frame format. Use this shared format, anyEquipment be appreciated that any grouping leading/header. This network enabled flow obtains good controlSystem, and there is no transmission collision. Hardware complexity also may reduce, because any equipment (bagDraw together dual-mode equipment) only need to implement at its receiver place that single carrier wave be intercepted, synchronization, reportHeader decode or channel estimating mechanism. Share leading and header and be included in single-carrier modulated groupingDivide into groups among the two transmission with multi-carrier modulation. Share leading and header in single carrier modeMiddle transmission, thus all above-mentioned three kinds of broadband devices can decipher leading and header, andAll devices in network be all designed such that all devices can understand single carrier share beforeLead and header.
The single carrier that Fig. 5 A and Fig. 5 B have described for transmit grouping according to above-mentioned form is sent outPenetrate the block diagram of machine 100 and dual-mode transmitter 110. The single carrier emitter 100 of Fig. 5 A comprisesEncoder 102, it receives data 104 and these data is encoded for transmission. Single carrierThe output of modulator 106 received code devices 102, and encoded Data Modulation is arrived to single yearOn ripple. Modulation signal transmits via antenna 108 subsequently. The single carrier emitter 100 of Fig. 5 ACan utilize the hardware identical with the only SC emitter of describing with reference to figure 2A, send basisShare the SC grouping of leading/header frame format. Single carrier emitter 100 is via antenna 108Transmission shares leading/header, and follows with the single carrier payload that comprises coded data that this is commonWith leading/header.
Fig. 5 B has described for transmitting the dual-mode transmitter 110 according to the grouping of above-mentioned form.Dual-mode transmitter 110 can/header format transmission single-carrier signal and overloading leading according to sharingRipple signal the two, such as ofdm modulation signal. Dual-mode transmitter 110 comprises encoder 112,Its reception coded data 114 are for transmission. Single carrier mode and multi-carrier mode the twoIn, share leading/header and all utilize single-carrier modulated device 116 to modulate, and via antenna 118Transmission. In single carrier mode, use single from the payload data of the coding of encoder 112Carrier modulator 116 is modulated, and transmitted share leading/header after via antenna 118Transmission. In multi-carrier mode, share leading/header and modulated by single-carrier modulated device 116,And transmit via antenna 118 in the mode that is similar to single carrier mode. But, at multicarrierIn pattern, the payload data of coding is modulated by multi-carrier modulator 120, and is transmitting listCarrier wave transmits via antenna 118 after sharing leading/header.
Fig. 6 A and Fig. 6 B described respectively single-carrier receiver 130 and comprise packet synchronization device/The multi-carrier receiver 140 of header decoder. Two receivers describing can both be understood listCarrier wave shares leading/header. The receiver 130 of Fig. 6 A is and the reception of describing with reference to figure 2BSimilarly SC receiver only of machine. Only SC receiver 130 receives single carrier via antenna 132Share leading/header, this antenna 132 will share leading/header and propagate into single carrier demodulation device134, this demodulator 134 is processed and is shared leading/header. Share leading/header identification groupingFollow-up payload part is single-carrier signal or multi-carrier signal. If share leading/header markKnow single carrier payload, single carrier demodulation device 134 receives payload via antenna 132, to onlyLotus carries out demodulation, and the payload of demodulation is passed to decoder 136, these decoder 136 logarithmsDecode according to 138, and make it can be used for circuit downstream. If share leading/header identificationMulticarrier payload, ignores payload, because single-carrier receiver 130 cannot be processed multicarrierPayload.
As shown in Fig. 6 A, only SC equipment is supported overloading without implementing extra processing blockWavelength-division group. Any single-carrier modulated grouping is all " pure " single carrier that does not need extra processGrouping. Multicarrier grouping is leading by single-carrier modulated and header builds, so single carrierThe equipment header of can decoding, and know the duration/destination of multicarrier grouping.
With reference to figure 6B, only MC receiver 140 be configured to understand single carrier share leading/Header. Only MC receiver 140 receives single carrier via antenna 142 and shares leading/header.The single carrier receiving shares leading/header and is located by packet synchronization device/header decoder 144Reason, the payload part that this packet synchronization device/header decoder 144 detects subsequently will be single carrierSignal or multi-carrier signal, and multiple characteristics of payload signal on the horizon. GroupingThe parameter that synchronized/header decoder 144 detects these is transmitted to multicarrier demodulator146. If packet synchronization device/header decoder detects the payload part on the horizon of groupingMulticarrier demodulator 146 is single-carrier signal, ignores this payload, because can not be processedSingle carrier payload. But, if share leading/header identification multicarrier payload, multicarrierDemodulator 146 as shown in 148, receives payload via antenna 142, and payload is carried outDemodulation, and transmit the payload of demodulation to decoder 150, this decoder 150 is to data 152Decode and make data can be used for circuit downstream. As shown in Fig. 6 B, only MC receiver140 only need extra, a simple packet synchronization and header receiver decoder piece in order toExtract all physical layer information for multicarrier demodulate/decode.
Fig. 7 A and Fig. 7 B have described to comprise the dual mode receiver of packet synchronization device/header demodulator160 and second dual mode receiver 180. Described two receivers can both be understood single carrierShare leading/header. The dual mode receiver 160 of Fig. 7 A receives single carrier via antenna 162Share leading/header. Receive leading/header propagate into single carrier demodulation device 164 and groupingSynchronized/header demodulator 166. Single carrier demodulation device 164 and packet synchronization device/header decodingDevice 166 the two processing receive leading/header, will be via single year to detect follow-up payloadRipple signal or multi-carrier signal arrive, and the parameter of definite signal and payload. IfBe single carrier payload by the payload of arrival, single carrier demodulation device 164 is from single-carrier signalExtract payload, and transmit this payload to decoder 172, this decoder 172 makes the number of decodingCan be used for circuit downstream according to 174. If payload on the horizon is multicarrier payload, divideGroup synchronized/header decoder 166 forwards signal on the horizon to multicarrier demodulator 168Parameter with payload. Shown in multicarrier demodulator 168 as 176, receive multi-carrier signal,And from multi-carrier signal, extract payload. The payload extracting propagates into decoder in subsequently172, this decoder 172 makes data 174 can be used for circuit downstream.
With reference to figure 7B, dual mode receiver 180 via antenna 182 receive single carrier share leading/Header. Share leading/header and processed by single carrier demodulation device 184, this demodulator 184 detectsPacket payload part on the horizon is single-carrier signal or multi-carrier signal. If be about toThe payload arriving is single-carrier signal, and single carrier demodulation device 184 extracts this payload, and toDecoder 186 transmits payload data, and this decoder 186 can be used for the data 188 of decodingCircuit downstream. If payload on the horizon is multi-carrier signal, single carrier demodulation device is alertShow multicarrier demodulator 190, and as shown in 192, by payload on the horizon and signalParameter hands on. Shown in multicarrier demodulator 190 as 194, receive on the horizonMulticarrier payload. Multicarrier demodulator 190 extracts payload from multi-carrier signal, and to solutionCode device 186 forwards payload, and this decoder 186 makes the data 188 of decoding can be used for downstream electricalRoad.
As mentioned above, only MC and dual mode receiver only need a small amount of additional hardware to processModified packet format. When receiver may be sampled from two groups of same source clockClock. Alternatively, receiver can use all groupings of sampling of the higher clock rate of multicarrier,And to lower clock rate segment applications digital interpolative. Receiver utilizes preface information to determineCarrier type, frequency shift (FS), timing reference, AGC/ADC arrange and single carrier channel punchingSwash and estimate (at least for header is carried out to demodulation).
By utilizing above-mentioned or similar transmitter and receiver, can support that single carrier is hardCoexisting between part and multicarrier hardware. Even if the modulation format of grouping on the horizon is not subject to prop upHold, only SC or only MC equipment also can/header leading by understanding postpone its oneselfTransmission, to avoid conflict. Can pass through to share leading/header with lower rate transmissions single carrier,Thereby all devices in network can be understood, and ensure to coexist.
Fig. 8 has described the superframe structure 200 for IEEE802.15.3cMAC. At this knotIn structure 200, beacon part 202 and contention access period part 204 form use with low commonWith the single-carrier signal transmission of data rate transport leading/header portion 206. This leading/reportHead part is identified at the payload part 208 transmitted during the channel time allocation period will be viaSingle-carrier signal or multiple-carrier signal transmission, and the ginseng of payload on the horizon and signalNumber, such as the physical layer demodulate/decode information of payload part. Receiver determines that signal is about toCome the characteristic of payload part 208 and the attribute of signal on the horizon, and be receive andThis signal of demodulation is made preparation.
Fig. 9-Figure 11 described to comprise share single carrier leading/exemplary frames of header. Fig. 9 describesSingle-carrier modulated grouping 210. Single-carrier modulated grouping 210 is to share single carrier leading 212Starting, is to share single carrier header 214 subsequently. Single carrier is leading/header portion 212,214Be single carrier physics service data unit (PSDU) 216 afterwards, this unit 216 is also claimedFor single carrier payload part 216. Shown in 218, can be by identical single carrier samplingClock, samples to whole single-carrier modulated grouping 210 at receiver place.
Figure 10 described to comprise single carrier leading/the OFDM multi-carrier modulation of header portion dividesGroup 220. This divides into groups to share SC leading 222 and shared single carrier header 224 starts. CanBy as single carrier sampling clock shown in 226, to share single carrier leading/headerDivide 222,224 to sample. Share single carrier leading/after header portion 222,224 beOFDMPSDU payload part 228. Can by as higher rate shown in 230OFDM sampling clock, samples to this multicarrier payload part 228. Sample frequency fromThe variation of slower single carrier sampling clock 226 to OFDM sampling clocks 230 causes that clock cutsChange 232, this can solve as discussed in this article below.
Figure 11 has described to comprise that the OFDM multi-carrier modulation of OFDM channel estimation sequence dividesGroup 240. Grouping is to share single carrier leading 242 and shared single carrier header 244 starts. CanBy as single carrier sampling clock shown in 246, to share single carrier leading/headerDivide 242,244 to sample. Share single carrier leading/after header portion 242,244 beOFDM payload part 248. Can by as the OFDM of higher rate shown in 250Sampling clock is sampled to OFDM payload part 248. In sampling rate from slower listThis variation of carrier wave sampling clock 246 to OFDM sampling clocks 250 causes as reference diagramClock described in 10 switches 252. The payload part 248 of OFDM grouping 240 comprises PSDUData division 254 and OFDM channel estimation sequence (CES) part 256. As will withUnder further describe in this article like that, CES part 256 makes the ofdm demodulator canFurther calibrate for grouped data part 254 on the horizon.
As described in reference to Figure 10 and Figure 11, can with different rates to grouping single carrier andMulticarrier part is sampled, to utilize benefit and the limitation of different modulation schemes. In order to keep awayExempt to be with and outer launch and complete channel plan (for example,, as 60GHz depicted in figure 1802.15.3c in the works shown in), can use the sampling of total bandwidth lower than the bandwidth of distributing timeClock rate (bandwidth) is transmitted single-carrier signal. These 34 places in Fig. 1 illustrate, whereinUse the clock of 1.728GHz to sample to single carrier baseband signal. Can also adjust at SCIn baseband signal processed, apply senior base band/analog pulse shape and filter, further to reduce outside bandTransmitting, and maintain by the defined spectrum mask of wireless standard.
On the contrary, can use the edge of frequency range in band such as the multi-carrier signal of OFDMProtection subcarrier (empty frequency range) and higher bandwidth transmit, with the outer transmitting of check strap andMaintain spectrum mask. For example, OFDM baseband signal can be used the clock of 2.592GHzSpeed is sampled, and this clock rate is 1.5 times of single carrier sample rate. At OFDMIn signal, be more easy to realize arteries and veins due to the existence of low subcarrier bandwidth and protection subcarrierRushing shape filters. This pulse shape filter can use be equivalent to frequency domain convolution time domain decrescence,Or can complete with convolution.
Figure 12 has described shared single carrier leading part 260. Share single carrier leading part 260Starting with signaling moiety 262, is frame separator sequence (SFD) 264 afterwards. Signaling moietyCan comprise sync section, channel estimating part and/or header portion. Frame separator sequence 264Can follow with single carrier channel estimated sequence 266.
Synchronous son field 262 comprises the letter for making receiver and packet synchronization on the horizonNumber. Synchronous son field 262 can comprise the frequency expansion sequence of repetition cascade, such as having pi/2BPSKModulation (or in the real part of baseband signal and imaginary part any other of propagation energy equallyModulation), the length Golay sequence that is 128, synchronous to assist to realize. Signaling moiety 262Can comprise extraly or alternatively the sequence coverage that uses frequency expansion sequence diffusion. Can makeWith different sequence coverages for signaling receiver about various parameters (such as slightlyNet ID or header rate). Can also carry out signaling receiver with different sequence coverages:Will be to the modulation of payload user data using single carrier or multi-carrier modulation. If these data are wrappedDraw together in signaling moiety 262, receiver can be found single carrier/many in the beginning of groupingCarrier mode, can arrange receiver and is used in particular for receiving single carrier data or multicarrierThe reception physical layer parameter of data, such as ADC surplus, ADC precision, the AGC order that gainsMark etc. Similarly, can come to receiver signaling about inciting somebody to action with different frequency expansion sequencesCan using single carrier modulation or multi-carrier modulation come modulating data payload (for example, different orThe form of the use identification data payload part of paired complementary Golay sequence). In addition,Carrier type, carrier frequency shift, AGC/ADC arrange and timing reference can be based on synchronouslySon field is determined. Similarly, can use the difference in leading SFD part to cover orderDifferent frequency expansion sequences in row or leading CES sequence, come to send and close to receiver signalingIn will using single carrier modulation or multi-carrier modulation carry out modulating data payload.
Frame separator sequence 264 is following sequences, its use as in 802.15.3c draft standardPi/2BPSK in 2.0 sets up frame timing, such as Golay sequence. Channel estimation sequenceThe 266th, the sequence of estimating for single carrier and/or multiple carrier channel of knowing for receiver,Such as thering is Golay as complementary in the length of the pi/2BPSK in 802.15.3c draft standard 2.0Sequence.
Figure 13 is the stream of describing the detection to payload transmission pattern based on single carrier sequence coverageCheng Tu. As shown in 272, dual mode receiver receives the single carrier signaling moiety of grouping.Make at 274 places about whether there be determining of single carrier sequence coverage in signaling moiety,The existence mark follow-up data payload part of this single carrier sequence coverage will be single-carrier signal.If single carrier payload user data sequence coverage, in single carrier signaling moiety, adopts "Yes"Branch 276, and as shown in 278, demodulation code payload portion in single carrier modePoint. If single carrier payload user data sequence coverage, not in single carrier signaling moiety, is about toThe payload user data arriving will be multi-carrier signal, and adopt "No" branch 280. Subsequently asShown in 282, demodulation code payload part in multi-carrier mode. Alternatively, canIn order to being used in, the different sequence coverages that exist in SFD part detect single carrier or multicarrier is cleanThe transmission of lotus part.
Figure 14 is the flow process of describing the detection to payload transmission pattern based on carrier wave frequency expansion sequenceFigure. As shown in 292, dual mode receiver receives the single carrier signaling moiety of grouping. ?Make about whether there is determining of single carrier frequency expansion sequence in signaling moiety at 294 places, and this is singleThe existence mark follow-up data payload part of carrier wave spreading part spreads will be single-carrier signal. IfSingle carrier payload user data frequency expansion sequence, in single carrier signaling moiety, adopts "Yes" branch,And as shown in 298, demodulation code payload part in single carrier mode. IfSingle carrier payload user data frequency expansion sequence not in single carrier signaling moiety, number on the horizonTo be multi-carrier signal according to payload, and adopt "No" branch. Subsequently as shown in 302,Demodulation code payload part in multi-carrier mode. Alternatively, can utilize CES partIn different frequency expansion sequences carry out signaling and send the transmission of single carrier or multicarrier payload part.
Figure 15 has described exemplary shared single carrier header 310. Single-carrier modulated header comprisesBelieve for divide into groups the two all essential physical layer demodulate/decode of single carrier grouping and multicarrierBreath, such as block length, guiding insertion information, Cyclic Prefix, and can comprise MAC layerHeader. Even if the MAC content in payload part cannot be decoded because of the pattern not being supported,Receiver also can obtain mac header information, because all receivers can both carry by decipher listRipple header portion. In order to increase the reliability of header decoding, can be with low data rate transportShare single carrier header 310. Header shown in Figure 15 is followed 802.15.3c draft 2.0 and is markedAccurate.
As described in reference to Figure 10 and Figure 11, with single carrier leading/the initial overloading of header portionRipple payload packet can the sample frequency between single-carrier portion and multicarrier part comprise jumpingTurn. This redirect may be on emitter and/or receiver some compensation, with consistentlyPayload part is carried out to demodulation code.
First compensation that may need is the continuity for maintain carrier frequency in the time switchingCompensation. In order to realize the continuity in carrier frequency, emitter is crossed over multicarrier payload and is dividedSingle carrier and the multi-carrier segment of group use identical carrier frequency. Identical source base band clockBe applied in two segmentations at emitter place, wherein can realize for producing by interpolationThe single-carrier portion of raw baseband signal compared with low sampling rate.
Another compensation that may need is the continuity for maintain carrier phase in the time switchingCompensation. Can be by control the list of multicarrier payload packet with pulse shaping filterThe outer transmission of spectrum mask/band of carrier wave and multi-carrier segment. If last of single carrier headerPhase difference between the first sampling of individual symbol and multicarrier payload part is large, existsThe phase place variation of SC/MC switching point may cause band greatly to be launched outward.
A solution is, by last of whole multi-carrier segment and single carrier headerThe phasor1 of symbol or there is the phase place approaching with the phase place of last symbol of headerPhasor1 multiply each other. For example, if header is to use pi/2BPSK modulation, and headerMiddle symbol quantity is 4 multiple, and last symbol is +/-j. Therefore, can pass through willMulti-carrier segment and j (if described last symbol be j) or-j is (if described lastSymbol for-j) multiply each other and realize compensation.
In Figure 16, describe the second solution. Figure 16 has described OFDMMC modulationA part for grouping 320, this OFDMMC modulation grouping 320 is at shared single carrier header326 comprise OFDM channel estimation sequence 422 and header tail 324. Single carrier header portion326 the end of header comprise odd amount in addition to the round number field (for example, with 41 of pi/2BPSK modulation,Make last symbol for-j). The OFDMMC payload part 328 of grouping 32 nextComprise that at the section start of payload part multicarrier CES symbol 322 (for example, can be used for OFDMThe OFDM-CES son field of channel estimating refinement). Can be by specifying header tail 324Last symbol comprises with respect to the little phase shift of an OFDM-CES symbol and minimum itChange the outer transmitting of band. Selected final header tail 324 symbols and OFDM-CES knownBetween beginning place compared with little phase shift realized to due to boundary cause compared with large phase shift spuiousThe elimination of the outer transmitting of band.
For from have single carrier leading/single carrier of the single carrier payload packet of header is to overloadingThe successful transition of ripple part is for dimension in the time switching and may need another compensation of implementingHold the compensation of power continuity. Single carrier and multi-carrier segment may be with identical powerTransmission. For this power continuity in single-carrier segment and multi-carrier segment is made to benefitRepay, can be based on suitably establishing from sharing the leading definite parameter of signaling moiety of single carrierPut receiver AGC.
The redirect that samples multicarrier sampling from single carrier may also need compensation, fixed to guaranteeTime in continuity. For example, in the situation of 802.15.3c, OFDM is with SC speed1.5 sampling. That is to say, the duration of 2 clock cycle of single-carrier portion withThe duration of 3 clock cycle of OFDM part is the same. In showing of 802.15.3cIn example, for assisting in ensuring that the successful transformation from single carrier to OFDM, should be at single carrier clockEvery 2 cycle boundary places ensure time alignment. Can use interpolation to turn from same source clockChange clock rate.
Figure 17 has described OFDM clock 332 wherein with 1.5 times of single carrier clock 334The sampling timing of speed sampling. Clock is aligned, and makes the first arteries and veins of OFDM clock 332Punching 336 is aimed at the first pulse 338 of single carrier clock 334, and as in 344 placesShow the 4th pulse 340 of OFDM clock 332 and the 3rd pulse of single carrier clock 334342 aim at.
Figure 18 has described wherein OFDM clock 352 with the speed of 2 times of single carrier clock 354The sampling timing of rate sampling. In the example of Figure 18, as shown in 360, when OFDMClock 352 in the end starts a single carrier pulsewidth after a single carrier header sampling 358356. Alternatively, OFDM clock can be such to be similar to mode as shown in Figure 17Operation continuously, wherein an OFDM pulse will be aimed at the first single carrier pulse, and theThree OFDM pulses will be aimed at the second single carrier pulse.
As mentioned above, comprise single carrier leading/grouping of the single carrier of header portion in, receiveMachine can depend on the CES in single-carrier portion described with reference to FIG. 12, or groupingMC part can comprise as the SC-CES subdivision as described in about Figure 11. Receiver thereinWith the information of SC-CES part come fill order's carrier wave and MC channel estimating the two, to useIn single carrier leading/the two situation of header and the demodulation of MC payload in, can from single carrier toIn the switching of multicarrier, keep coherent frequency spectrum.
SC-CES is conventionally because producing and have height with the processing gain of single carrier sample rate samplingThe channel impulse response of the degree of accuracy. Use SC-CES, can pass through multicarrier clock rateEstimation channel response carry out over-sampling, and the sampling that detects is carried out to fast FlourierConversion (FFT), and obtain (each subcarrier) multicarrier channel estimation in frequency domain. FFTCan be applied directly to time domain channel and estimate above, and the channel estimation in frequency domain as a result of generatingCan be downsampled (for example,, to 352 (336+16) individual tone). In order to utilize SC-CESEstimate for multiple carrier channel, the frequency response of single carrier and multicarrier may need almost phaseWith, with the quality that ensures that multiple carrier channel is estimated.
A kind of equivalent channel be air traffic channel, transmitter and receiver place analog filter withAnd the combination of the numeral at transmitter and receiver place (shaping pulse) wave filter. Air traffic channelAnd the analog filter at transmitter and receiver place is usually between single carrier and multi-carrier segmentIdentical. But the design requirement of digital filter based on single carrier and multi-carrier segment canCan be different.
For maintaining the first mechanism of the coherent frequency spectrum between single carrier and the multicarrier of groupingTo allow single carrier and multi-carrier segment use same sample rate to utilize the same number at emitter placeWord wave filter. Figure 19 described a kind of for the single-carrier portion at the signal receiving withBetween OFDM or other multicarrier parts, maintain the transmitter configuration of coherent frequency spectrum. In order to doTo this point, as shown in 374, two segmentations 372 can be upsampled to same speed,And applied same digital filter before entering digital to analog converter (DAC) 378 subsequently376。
The second mechanism is predetermined and to be fixed for the digit pulse of single carrier and multi-carrier segment wholeMode filter, makes their frequency responses (amplitude and phase place) to different sub carrier by sending outThe two is known to penetrate machine and receiver. Although wave filter amplitude is generally on data subcarrierSmooth, but this second mechanism may limit enforcement flexibility.
Except carry out with SC-CES for grouping multicarrier part channel estimating withOutward, the multicarrier part of grouping can comprise its oneself MC-CES. Use thereinMC-CES carries out in the situation of channel estimating, in order to the compensation that maintains above-mentioned coherent frequency spectrum isUnnecessary. In addition, if utilize MC-CES and be grouped into multicarrier payload packet,The transmission of SC-CES may be unnecessary. Figure 20 has described OFDM multi-carrier modulationGrouping 380, it comprises OFDM channel estimation sequence 382, and this OFDM channel estimatingSequence 382 does not comprise single carrier channel estimated sequence. This illustrates at 384 places, wherein sharesThe leading CES subdivision that do not comprise of single carrier. This can be with above with reference to the example described in Figure 12Property share the leading formation of single carrier contrast.
For thering is the grouping of single carrier payload, may still need to apply SC-CES. ConnectReceipts machine can be configured to inform based on the signaling moiety 386 that shares single carrier leading 384Whether there is single carrier payload coming, thereby and inform whether have SC-CES to arrive. IfDo not transmit SC-CES, receiver can use the signaling moiety that shares single carrier leading 384386 determine single carrier channel estimation (for example, by the adaptive training as at 802.11b),Header still can correctly be decoded. Because header can use high invasin diffusion,So have for the channel estimating inaccuracy that may be caused by removal SC-CESRobustness.
As extra example, SC-CES and MC-CES can be in multicarrier payload packetTransmission. Can be that the first channel estimating is calculated in whole grouping based on SC-CES subdivision. Also canMC-CES subdivision with the multicarrier payload part based on receiving is calculated second channelEstimate. The two can be used to these first and second channel estimating produce for the treatment of overloadingThe final channel estimating of ripple payload part.
Figure 21 has described an additional examples, wherein runs through SC394 and MC396 part,With same speed 392, OFDM multicarrier grouping 390 is sampled. In this example,The SC394 of grouping and MC396 part are utilized same sample rate all the time. For example, can be withThe approximately SC394 of the speed (for example, 1.95GHz is to 2.05GHz) of 2GHz to groupingThe two is sampled with MC396 part. Two parts all can be passed through suitable Digital and analogFilter and meet by the defined spectrum mask of regulatory authority. In this case, SC withBetween OFDM part, do not need sample rate to switch. Be single carrier grouping and overloading wavelength-division simultaneouslyOrganize the two and adopt identical sample rate to improve the ease for use coexisting, because each device just is realExecute one group demodulation/decoding scheme leading for receiving/header. Grouping single-carrier portion withBetween OFDM part, do not occur sample rate redirect, this has alleviated several in above-mentioned compensationThe needs of individual compensation. In addition, if the grouping application to whole transmission is same at emitter placeDigital filter, SC-CES can be used for running through the channel estimating in whole grouping. Therefore,May not need OFDM-CES, thereby further improve physical layer efficiency. As alternative,Can in the situation that not using SC-CES, use OFDM-CES. It is alternative as another,Can use SC-CES and OFDM the two with obtain reliability.
Figure 22 has described to run through that SC404 and MC406 part sample with same speed 402The shared leading part 408 of OFDM multicarrier grouping 400. Share leading 408 and comprise single yearRipple sync section 410, it comprises frame separator sequence. Share leading 408 also comprise shared(SC/OFDM) channel estimation sequence 412. SC/OFDMCES412 is channel estimating orderRow, what it can be for the single carrier in payload and/or header 414 and/or ofdm signalChannel estimating.
Figure 23 has described to run through that SC424 and MC426 part sample with same speed 422OFDM multicarrier grouping 420, wherein comprises OFDM at the section start of MC part 426Channel estimation sequence 427. OFDMCES427 can be not included among SC payload packet.For example, SC payload packet can be utilized the SYNC part 428 of SC part, fills for obtainingThe SC channel estimating of dividing. Grouping 420 finishes with OFDM payload part 429.
Figure 24 has described the single carrier grouping of transmitting to share SC/OFDM sample rate 432430. Single carrier grouping 430 depicted in figure 24 is depicted in figure 22 almost identicalThe single-carrier modulated version of multicarrier grouping. Single carrier grouping 430 comprises shared leading434, it comprises sync section 436 and shared SC/OFDM channel estimation sequence 438.Single carrier grouping 430 also comprises shared header 440 and SC payload 442.
Figure 25 described to have the header 454 of the transmission mode of depending on, to share SC/OFDMThe packet 450 that sample rate 452 is transmitted. Grouping 450 comprises that to share SC leading 456,It comprises sync section 458 and shared SC/OFDM channel estimation sequence 460. Depend on biographyThe header 454 of defeated pattern is transmission after sharing leading 456. Header 454 is SC headers,Or (, SC payload and SC header match based on payload 462 modulation formats; OFDMPayload and OFDM header match) OFDM modulation header.
Figure 26 has described to be configured to share SC/OFDM sample rate transmission of data packetsDual-mode transmitter 470. Emitter 470 comprises single-carrier modulated device 472, for working as emitter470 modulate the single-carrier portion of following packet, these data in single carrier group mode timeGrouping at least comprises shared leading and single carrier payload. Right according to the output of common clock 474The output of single-carrier modulated device 472 is sampled. Emitter also comprises multi-carrier modulator476, for when emitter 470, at multicarrier group mode, time modulation comprises multicarrier payloadThe multicarrier part of packet. Also according to the output of common clock 474, multicarrier is adjustedThe output of device 476 processed is sampled, and makes to adjust from single-carrier modulated device 472 and multicarrierThe signal of device 476 processed for example, is sampled with same data rate (,～2GHz). Port Multiplier478 from 474 outputs of single-carrier modulated device and the multi-carrier modulator 476 through sampling through samplingIn output, select (for example, to share between leading/header and multicarrier payload at single carrierWhen transition). Signals selected processed on digital to analog converter 480 and via antenna 482Wireless transmission.
Figure 27 A and Figure 27 B have described another example. Figure 27 A has described to comprise single carrier reportThe single-carrier modulated grouping 500 of head. Figure 27 B has described to comprise that including OFDM channel estimatesThe OFDM multi-carrier modulation grouping 506 of the OFDM header of meter sequence. As institute in Figure 27 AShow, single carrier payload packet 500 comprises the shared leading segmentation 502 of single carrier and single carrier reportHead part 504. In this example, single carrier payload packet is to be similar to above-mentioned form. SoAnd, in the multi-carrier modulation grouping 506 of Figure 27 B, a kind of variation is shown. Figure 27 B'sOFDM multi-carrier modulation grouping 506 comprises and the similar shared list shown in Figure 27 ACarrier wave leading part 508. But the OFDM payload packet of Figure 27 B is at the single carrier of frameIn part, do not comprise the header portion of grouping. But as shown in 510, clock switchesFollowing single carrier leading part 508 closely occurs. The transmission of OFDM-CES subdivision follow withOFDM header portion 512, it is during the OFDM of OFDM payload packet 506 partTransmission. OFDM header 512 thereby follow the payload part with OFDM.
Figure 28 is that the signaling moiety receiving based on receiving signal is to single carrier mode signalOr the multi-carrier mode signal flow chart of decoding. As shown in 522, receive instituteReceive the single carrier signaling moiety of signal. At 524 places, from the signaling moiety receiving, examineThe payload part of measuring the signal receiving will be single-carrier signal or multi-carrier signal. AsFruit sends single carrier payload by signaling moiety signaling, as shown in 526, and signal cleanLotus part demodulation code in single carrier mode. On the contrary, if the signaling moiety receivingSignaling sends multicarrier payload, and as shown in 528, payload part is at multi-carrier modeMiddle demodulation code. At 530 places, be stored in computer-readable through the payload of decoding and deposit subsequentlyIn reservoir.
Figure 29 is a kind of for transmitting single year after the transmission of the single carrier signaling moiety of signalThe flow chart of the method for ripple payload or multicarrier payload. At 542 places, about with single carrier mouldFormula still sends payload part with multi-carrier mode and makes definite. As shown in 544, send outPenetrate the suitable single carrier signaling moiety of machine signal transmission. This signaling moiety can identify follow-upPayload part is single carrier or multicarrier payload. Send multicarrier payload really if madeFixed, as shown in 546, through multiple carrier-wave transmission payloads. On the contrary, if sendSingle carrier payload, as shown in 548, through single carrier-wave transmission payload.
Figure 30 is a kind of for the single carrier signaling moiety of signal being carried out with the first sample rateAfter transmission, transmit single carrier payload or multicarrier payload to share single carrier/multicarrier sample rateThe flow chart of method. As shown in 562, receive the signal being received with first rateSingle carrier signaling moiety. At 564 places, from the signaling moiety receiving, detect receptionTo the payload part of signal will be single-carrier signal or multi-carrier signal. At 566 places,Receive the payload part of the signal being received with the first sample rate. If signaling moiety signaling is sent outSend single carrier payload, as shown in 568, the payload part of signal is in single carrier modeMiddle demodulation code. On the contrary, if the signaling moiety signaling receiving sends multicarrier payload,As shown in 570, payload part is demodulation code in multi-carrier mode. Exist subsequently572 places, are stored in computer-readable memory subsequently through the payload of decoding.
Above-mentioned concept can be implemented on including following described those examples in this articleAmong diversified application. With reference to Figure 31, the present invention can be implemented in equipment 580.This equipment can be the equipment that receives wireless signal---for example, and memory device, department of computer scienceSystem, smart phone, Set Top Box, cell phone, personal digital assistant (PDA), vehicle,Etc.. The present invention can implement in signal processing and/or control circuit, and described circuit is to summarizeBe identified in WLAN interfaces 584 places, equipment 580 and/or large capacity number in Figure 31According to memory. In one is implemented, equipment 580 receives signal from source, and output is suitable forShowing such as television set and/or monitor and/or other video and/or audio output equipmentsShow the signal of device 588. The signal of equipment 580 is processed and/or control link 584 and/or otherCircuit (not shown) can deal with data, carry out coding and/or encrypt, carry out calculate, latticeFormula data and/or any other required function of execution application-specific.
Equipment 580 can with the mass data storage with non-volatile mode storage dataDevice 590 is communicated by letter. Large capacity data memory 590 can comprise light and/or magnetic storage apparatus, exampleAs hard disk drive HDD and/or DVD. Equipment 580 can be connected to memory 594,Such as RAM, ROM; Be connected to low delay nonvolatile memory, such as flash memoryAnd/or other suitable electronic data memories. Equipment 580 can also be supported via WLANNetwork interface 596 is connected with WLAN.
This printed instructions usage example discloses the present invention, comprises optimal mode, andMake those skilled in the art can make and use the present invention. It should be noted in the discussion above that thisThe described system and method for literary composition can be equally applicable to other FM encoding schemes. Of the present invention canThe scope of the claims can comprise other examples of being expected by those skilled in the art.

Claims (36)

  1. One kind implemented by processor to comprising receiving of payload part and signaling moietyThe method that signal is processed, described in the described signaling moiety of the signal that receives be single carrierSignal, described in the payload part of the signal that receives be single-carrier signal or multi-carrier signal,Described method comprises:
    The described signaling moiety of the signal receiving described in receiving with the first sample rate;
    The signal receiving described in detecting from the described signaling moiety of the described signal receivingDescribed payload part be single-carrier signal or multi-carrier signal;
    The described payload part of the signal receiving described in receiving with described the first sample rate;
    Described payload part in response to the described signal receiving was single-carrier signal, at single yearThe described payload part of the signal receiving described in demodulation in wave mode;
    Described payload part in response to the described signal receiving is multi-carrier signal, in overloadingThe described payload part of the signal receiving described in demodulation in wave mode; And
    The data of the payload part through demodulation from the described signal receiving are stored in to meterIn calculation machine readable memory;
    Described first sample frequency of the wherein said signal receiving be transmission described in receiveThe single-carrier modulated device of system and the shared sample rate of multi-carrier modulator of signal,And
    The described signaling moiety of the wherein said signal receiving is that the single carrier receiving is leadingA part, and described in the single carrier that receives is leading also comprises:
    Frame separator sequence (SFD), is used to set up frame timing, and
    Single carrier channel estimated sequence (CES), is used to channel estimating.
  2. 2. according to the process of claim 1 wherein from the described letter of the described signal receivingThe described payload part that makes in part the signal receiving described in detecting be single-carrier signal orMulti-carrier signal comprises:
    The described signaling moiety of the signal receiving described in determining is also to comprise the first sequence coverageIt is the second sequence coverage.
  3. 3. according to the process of claim 1 wherein from the described letter of the described signal receivingThe described payload part that makes in part the signal receiving described in detecting be single-carrier signal orMulti-carrier signal comprises:
    The described signaling moiety of the signal receiving described in determining is also to comprise the first frequency expansion sequenceIt is the second frequency expansion sequence.
  4. 4. according to the process of claim 1 wherein that described receiver believes based on described single carrierChannel estimation sequence is estimated for described single carrier mode and the two execution channel of described multi-carrier modeMeter.
  5. According to the process of claim 1 wherein described the first sample rate 1.95GHz with2.05GHz between.
  6. 6. according to the process of claim 1 wherein:
    After the described signaling moiety of the described signal receiving, follow and share single carrier headerPoint;
    One or more lists that described shared single carrier header portion is known with described receiverCarrier wave end signal finishes; And
    One or more multicarriers that described payload part is known with described receiver start letterNumber initial.
  7. 7. described in demodulation, receive in multi-carrier mode according to the process of claim 1 whereinTo the described payload part of signal also comprise: the signal receiving described in reception with instituteState the described overloading of the power delivery that the described single carrier signaling moiety of the signal receiving is identicalRipple payload part.
  8. 8. according to the process of claim 1 wherein that described multi-carrier signal is ofdm signal.
  9. 9. follow and be selected from bag according to the signal receiving described in the process of claim 1 whereinDraw together the standard of the group of 802.15.3c, 802.11g and 802.11n.
  10. 10. according to the process of claim 1 wherein from the described list of the described signal receivingIn carrier signalling part, detecting described payload part is single-carrier signal or multi-carrier signal bagDraw together: which the Golay sequence detecting in a pair of complementary Golay sequence is used as for describedThe frequency expansion sequence of signaling moiety.
  11. The described signaling of the signal receiving described in 11. bases the process of claim 1 whereinThe transmission mode proprietary header part of the signal receiving described in following after part.
  12. 12. 1 kinds implemented by processor to comprising receiving of payload part and signaling moietyThe method that signal is processed, described in the described signaling moiety of the signal that receives be single carrierSignal, described in the payload part of the signal that receives be single-carrier signal or multi-carrier signal,Described method comprises:
    The described signaling moiety of the signal receiving described in receiving with the first sample rate;
    The signal receiving described in detecting from the described signaling moiety of the described signal receivingDescribed payload part be single-carrier signal or multi-carrier signal;
    The described payload part of the signal receiving described in receiving with described the first sample rate;
    Described payload part in response to the described signal receiving was single-carrier signal, at single yearThe described payload part of the signal receiving described in demodulation in wave mode;
    Described payload part in response to the described signal receiving is multi-carrier signal, in overloadingThe described payload part of the signal receiving described in demodulation in wave mode; And
    The data of the payload part through demodulation from the described signal receiving are stored in to meterIn calculation machine readable memory;
    Described first sample frequency of the wherein said signal receiving be transmission described in receiveThe single-carrier modulated device of system and the shared sample rate of multi-carrier modulator of signal,And
    Wherein from the described single carrier signaling moiety of the described signal receiving, detect described cleanLotus part is that single-carrier signal or multi-carrier signal comprise: detect in two sequence coveragesThe SFD portion of the described signaling moiety of the signal receiving described in which sequence coverage appears atIn point, or which frequency expansion sequence in two frequency expansion sequences is at the described signal receivingThe CES part of described signaling moiety in use.
  13. 13. 1 kinds implemented by processor to comprising receiving of payload part and signaling moietyThe method that signal is processed, described in the described signaling moiety of the signal that receives be single carrierSignal, described in the payload part of the signal that receives be single-carrier signal or multi-carrier signal,Described method comprises:
    The described signaling moiety of the signal receiving described in receiving with the first sample rate;
    The signal receiving described in detecting from the described signaling moiety of the described signal receivingDescribed payload part be single-carrier signal or multi-carrier signal;
    The described payload part of the signal receiving described in receiving with described the first sample rate;
    Described payload part in response to the described signal receiving was single-carrier signal, at single yearThe described payload part of the signal receiving described in demodulation in wave mode;
    Described payload part in response to the described signal receiving is multi-carrier signal, in overloadingThe described payload part of the signal receiving described in demodulation in wave mode; And
    The data of the payload part through demodulation from the described signal receiving are stored in to meterIn calculation machine readable memory;
    Described first sample frequency of the wherein said signal receiving be transmission described in receiveThe single-carrier modulated device of system and the shared sample rate of multi-carrier modulator of signal,
    The described payload part of wherein said multi-carrier signal is opened with multiple carrier channel estimated sequenceBegin, and the described payload portion of the signal wherein receiving described in demodulation in multi-carrier modeDivide and comprise based on described multiple carrier channel estimated sequence for described multi-carrier mode execution channelEstimate, and
    The described signaling moiety of the wherein said signal receiving is that the single carrier receiving is leadingA part, and the leading single carrier channel that do not comprise of the wherein said single carrier receiving is estimatedMeter sequence.
  14. 14. according to the method for claim 13, wherein from described in the described signal receivingDescribed in detecting in signaling moiety the described payload part of the signal that receives be single-carrier signal alsoThat multi-carrier signal comprises:
    The described signaling moiety of the signal receiving described in determining is also to comprise the first sequence coverageIt is the second sequence coverage.
  15. 15. according to the method for claim 13, wherein from described in the described signal receivingDescribed in detecting in signaling moiety the described payload part of the signal that receives be single-carrier signal alsoThat multi-carrier signal comprises:
    The described signaling moiety of the signal receiving described in determining is also to comprise the first frequency expansion sequenceIt is the second frequency expansion sequence.
  16. 16. according to the method for claim 13, and wherein said the first sample rate is at 1.95GHzAnd between 2.05GHz.
  17. 17. according to the method for claim 13, wherein:
    After the described signaling moiety of the described signal receiving, follow and share single carrier headerPoint;
    One or more lists that described shared single carrier header portion is known with described receiverCarrier wave end signal finishes; And
    One or more multicarriers that described payload part is known with described receiver start letterNumber initial.
  18. 18. according to the method for claim 13, wherein in multi-carrier mode, described in demodulation, connectsThe described payload part of the signal of receiving also comprises: the signal receiving described in reception withThe power delivery that the described single carrier signaling moiety of the described signal receiving is identical described manyCarrier wave payload part.
  19. 19. according to the method for claim 13, and wherein said multi-carrier signal is OFDM letterNumber.
  20. 20. according to the method for claim 13, and the wherein said signal receiving is followed and is selected fromComprise the standard of the group of 802.15.3c, 802.11g and 802.11n.
  21. 21. according to the method for claim 13, wherein from described in the described signal receivingIn single carrier signaling moiety, detecting described payload part is single-carrier signal or multi-carrier signalComprise: which the Golay sequence detecting in a pair of complementary Golay sequence is used as for instituteState the frequency expansion sequence of signaling moiety.
  22. 22. according to the method for claim 13, the described letter of the wherein said signal receivingThe transmission mode proprietary header part of the signal receiving described in following after order part.
  23. 23. 1 kinds implemented by processor to comprising receiving of payload part and signaling moietyThe method that signal is processed, described in the described signaling moiety of the signal that receives be single carrierSignal, described in the payload part of the signal that receives be single-carrier signal or multi-carrier signal,Described method comprises:
    The described signaling moiety of the signal receiving described in receiving with the first sample rate;
    The signal receiving described in detecting from the described signaling moiety of the described signal receivingDescribed payload part be single-carrier signal or multi-carrier signal;
    The described payload part of the signal receiving described in receiving with described the first sample rate;
    Described payload part in response to the described signal receiving was single-carrier signal, at single yearThe described payload part of the signal receiving described in demodulation in wave mode;
    Described payload part in response to the described signal receiving is multi-carrier signal, in overloadingThe described payload part of the signal receiving described in demodulation in wave mode; And
    The data of the payload part through demodulation from the described signal receiving are stored in to meterIn calculation machine readable memory;
    Described first sample frequency of the wherein said signal receiving be transmission described in receiveThe single-carrier modulated device of system and the shared sample rate of multi-carrier modulator of signal,And
    Described in following after the described signaling moiety of the wherein said signal receiving, receiveThe shared single carrier header portion of signal, and the wherein said signal receiving is described commonComprise physical layer demodulating information with single carrier header portion, described physical layer demodulating information comprisesBlock length and guiding insertion information.
  24. 24. according to the method for claim 23, the subpackage of wherein said total single carrier headerContaining fill order's carrier wave demodulation/decoding or the required all information of multicarrier demodulate/decode.
  25. 25. according to the method for claim 23, wherein from described in the described signal receivingDescribed in detecting in signaling moiety the described payload part of the signal that receives be single-carrier signal alsoThat multi-carrier signal comprises:
    The described signaling moiety of the signal receiving described in determining is also to comprise the first sequence coverageIt is the second sequence coverage.
  26. 26. according to the method for claim 23, wherein from described in the described signal receivingDescribed in detecting in signaling moiety the described payload part of the signal that receives be single-carrier signal alsoThat multi-carrier signal comprises:
    The described signaling moiety of the signal receiving described in determining is also to comprise the first frequency expansion sequenceIt is the second frequency expansion sequence.
  27. 27. according to the method for claim 23, and wherein said the first sample rate is at 1.95GHzAnd between 2.05GHz.
  28. 28. according to the method for claim 23, wherein:
    After the described signaling moiety of the described signal receiving, follow and share single carrier headerPoint;
    One or more lists that described shared single carrier header portion is known with described receiverCarrier wave end signal finishes; And
    One or more multicarriers that described payload part is known with described receiver start letterNumber initial.
  29. 29. according to the method for claim 23, wherein in multi-carrier mode, described in demodulation, connectsThe described payload part of the signal of receiving also comprises: the signal receiving described in reception withThe power delivery that the described single carrier signaling moiety of the described signal receiving is identical described manyCarrier wave payload part.
  30. 30. according to the method for claim 23, and wherein said multi-carrier signal is OFDM letterNumber.
  31. 31. according to the method for claim 23, and the wherein said signal receiving is followed and is selected fromComprise the standard of the group of 802.15.3c, 802.11g and 802.11n.
  32. 32. according to the method for claim 23, wherein from described in the described signal receivingIn single carrier signaling moiety, detecting described payload part is single-carrier signal or multi-carrier signalComprise: which the Golay sequence detecting in a pair of complementary Golay sequence is used as for instituteState the frequency expansion sequence of signaling moiety.
  33. 33. according to the method for claim 23, the described letter of the wherein said signal receivingThe transmission mode proprietary header part of the signal receiving described in following after order part.
  34. 34. 1 kinds for transmitting the system of the signal that comprises payload part and signaling moiety, described inThe described signaling moiety of signal of transmission is single-carrier signal, described in the signal of described transmissionPayload part is single-carrier signal or multi-carrier signal, and described system comprises:
    Single-carrier modulated device, for the described signaling moiety modulation to the signal transmitting described in major generalFor single-carrier signal;
    Multi-carrier modulator, for when described system during in multicarrier payload pattern by described biographyThe described payload part of defeated signal is modulated to multi-carrier signal; And
    Clock, defeated for the output to described single-carrier modulated device and described multi-carrier modulatorGo out application and share sample rate,
    The described signaling moiety of the signal of wherein said transmission be transmission single carrier leading onePart, and the single carrier of described transmission is leading also comprises:
    Frame separator sequence (SFD), is used to set up frame timing, and
    Single carrier channel estimated sequence (CES), is used to channel estimating.
  35. 35. according to the system of claim 34, the described signaling of the signal of wherein said transmissionPart is via one in the use of in two sequence coverages or two frequency expansion sequencesThe described payload part that makes the signal for identifying described transmission will be single-carrier signal orMulti-carrier signal.
  36. 36. 1 kinds for the treatment of comprise payload part and signaling moiety the signal receiving beSystem, described in the described signaling moiety of the signal that receives be single-carrier signal, described in receiveThe described payload part of signal be single-carrier signal or multi-carrier signal, described system comprises:
    Signaling moiety analyzer, is configured to the signal receiving described in receiving with the first sample rateDescribed signaling moiety, and detect from the described signaling moiety of the described signal receivingThe described payload part of the described signal receiving is single-carrier signal or multi-carrier signal;
    Demodulator, is configured to the institute of the signal that receives described in receiving with described the first sample rateState payload part, and be single carrier in response to the described payload part of the described signal receivingSignal, and the described payload part of the signal receiving described in demodulation in single carrier mode;Described demodulator is also configured toMulti-carrier signal, and the described payload of the signal receiving described in demodulation in multi-carrier modePart; And
    Computer-readable memory, it is configured to store the warp from the described signal receivingThe data of the payload part of demodulation;
    Described first sample frequency of the wherein said signal receiving be transmission described in receiveThe single-carrier modulated device of system and the shared sample rate of multi-carrier modulator of signal,And
    The described signaling moiety of the wherein said signal receiving is that the single carrier receiving is leadingA part, and described in the single carrier that receives is leading also comprises:
    Frame separator sequence (SFD), is used to set up frame timing, and
    Single carrier channel estimated sequence (CES), is used to channel estimating.
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