CN101796744B - Method and apparatus for realizing bit steam reliability equalizing in wireless cooperative relay network - Google Patents
Method and apparatus for realizing bit steam reliability equalizing in wireless cooperative relay network Download PDFInfo
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- CN101796744B CN101796744B CN200780100091.4A CN200780100091A CN101796744B CN 101796744 B CN101796744 B CN 101796744B CN 200780100091 A CN200780100091 A CN 200780100091A CN 101796744 B CN101796744 B CN 101796744B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/026—Co-operative diversity, e.g. using fixed or mobile stations as relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15592—Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path
Abstract
A method and apparatus for processing bit streams to equalize the reliability of the bit streams received by the receiver in the relay station of a wireless cooperative relay network, wherein the relay station works in the decode forward relay work mode, and a method and apparatus for recovering the signals from multiple relay stations and after bit adjusting in receiver among the network devices in the wireless cooperative relay network. The relay station respectively adjusts multiple bits corresponding to each modulation symbol in the bit sequence to be modulated to produce bit sequence after bit adjusting. The invention may make bits at aposition of weak protection in a relay station be at a position of strong protection in another relay station, thereby, after the signals from all relay stations rare incorporated in the receiver, the different bits are with more equalizing reliability.
Description
Technical field
The present invention relates to the wireless cooperation junction network, relate in particular to relay station in the wireless cooperation junction network and the receiver in the network equipment.
Background technology
In existing cooperating relay network, different relay stations receives the signal from same source device, and will merge from the signal of different relay stations at the destination device end.Fig. 1 shows the schematic network structure according to the wireless cooperation junction network of prior art.Among Fig. 1, a plurality of relay stations at first receive the signal from same source device; Then, according to corresponding relaying mode of operation the signal from same source device that receives is handled respectively; At last, the signal after handling is forwarded to destination device, the signal from different relay stations that destination device will receive merges.Only show two cooperating relay stations among Fig. 1 although those skilled in the art will be understood that, in concrete the application, can have a plurality of cooperating relay station.A plurality of relay stations among Fig. 1 can adopt and amplify forward direction (A﹠amp; F) relaying mode of operation is amplified the signal from source device that receives and is transmitted, and perhaps adopts decoding forward direction (D﹠amp; F) relaying mode of operation is carried out the signal from source device that receives demodulation, decoding, is encoded, modulation again, and then with its forwarding.(for example: high-order modulating such as 16QAM or 64QAM) signal from same source device that receives is modulated again adopt high-order modulating if work in the relay station of decoding forward direction relaying mode of operation; in bit sequence to be modulated, must there be some bits to be in weak guard bit in a plurality of bits corresponding with each modulation symbol so; and other bits are in strong guard bit; as Fig. 2 a and 2b illustrate respectively according to shown in the planisphere of the 16QAM of prior art and 64QAM modulation; bit with underscore sign is in strong guard bit, and the bit that does not have underscore to indicate is in weak guard bit.Thereby destination device is after the signal from different relay stations that will receive merges, and it is bigger to be in the probability that those bits of weak guard bit make a mistake, thus reliability a little less than; And the probability that those bits that are in strong guard bit make a mistake is less, thereby reliability is stronger.Therefore, the employing high order modulation can cause the unbalanced problem of reliability of the received bit stream of destination device in the relay station, and the unbalanced meeting of bit reliability causes the performance of channel-decoding to descend, thereby the performance of whole system is descended.
Summary of the invention
For solving above-mentioned shortcoming of the prior art, the present invention proposes a kind of method and apparatus of in the wireless cooperation junction network, realizing bit steam reliability equalizing, carrying out the bit adjustment respectively by a plurality of bits corresponding with each modulation symbol in the bit sequence for the treatment of modulation treatment at relay station handles, and receiver the bit sequence that obtains after demodulation process from the signal of making the relay station that the bit adjustment handles is carried out with this relay station in bit adjustment contrary adjustment of bit of handling contrary handle, make that the reliability at the received bit stream of receiving terminal receiver is able to equilibrium.
According to a first aspect of the invention, provide a kind of in the relay station of wireless cooperation junction network, being used for that bit stream is handled so that the method for the steam reliability equalizing of the received bit stream of receiver, wherein, described relay station is operated under the decoding forward direction relaying mode of operation; It is characterized in that, may further comprise the steps: treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment and carry out bit adjustment processing respectively, to generate the bit sequence after the bit adjustment is handled.
According to a second aspect of the invention, provide and be used for the method handled from the signal after the bit adjustment is handled of a plurality of relay stations in a kind of receiver of the network equipment at the wireless cooperation junction network, wherein, may further comprise the steps: to the bit sequence that after demodulation process, obtains from the signal of making the relay station that the bit adjustment handles carry out with this relay station in bit adjustment contrary adjustment of bit of handling contrary handle, to generate through the contrary bit sequence of adjusting after handling of bit.
According to a third aspect of the invention we, provide a kind of in the wireless cooperation junction network, being used for that bit stream is handled so that the relay station of the steam reliability equalizing of the received bit stream of receiver, wherein, described relay station is operated under the decoding forward direction relaying mode of operation; It is characterized in that, comprising: bit is adjusted processing unit, carries out the bit adjustment respectively for the bit sequence a plurality of bits corresponding with each modulation symbol for the treatment of modulation treatment and handles, to generate the bit sequence after the bit adjustment is handled.
According to a forth aspect of the invention, provide a kind of in the network equipment of wireless cooperation junction network, being used for that the signal after the bit adjustment is handled from a plurality of relay stations is reduced the receiver of handling, wherein, comprise: the contrary processing unit of adjusting of bit, carry out handling the bit of contrary against adjusting processing, with the bit sequence of generation after the contrary adjustment of bit is handled with the bit adjustment of this relay station for the bit sequence that the signal from the relay station of doing bit adjustment processing is obtained after demodulation process.
According to a fifth aspect of the invention, a kind of wireless cooperation relay system is provided, wherein, comprise a plurality of network equipments and a plurality of relay station, it is characterized in that, at least one relay station is described according to a third aspect of the invention we relay station in described a plurality of relay station, and wherein, the different relay stations in described at least one relay station adopt different bits to adjust processing mode; The receiver of described each network equipment comprises as described according to a forth aspect of the invention receiver.
In the present invention, the different relay stations that are operated under the decoding forward direction repeater mode carried out different bit adjustment processing earlier before bit sequence is carried out modulation treatment, and then this bit sequence is modulated.By adopting different bit adjustment to handle at different relay stations; can make the bit that in the bit stream that a relay station transmits, is in weak guard bit in another relay station, be in strong guard bit; therefore; after receiver will merge from the signal of all relay stations; the reliability of each bit is able on average; thereby, can obtain the equalization of bit reliability on the whole.
Description of drawings
By reading the detailed description of doing with reference to the following drawings that non-limiting example is done, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the schematic network structure according to the wireless cooperation junction network of prior art;
Fig. 2 a and 2b show the planisphere according to the 16QAM of prior art and 64QAM modulation respectively;
Fig. 3 shows according to a specific embodiment of the present invention, is used for bit stream is handled so that the flow chart of the method for the steam reliability equalizing of the received bit stream of receiver in the relay station of wireless cooperation junction network;
Fig. 4 shows according to a specific embodiment of the present invention, is used for the flow chart to the method for handling from the signal after the bit adjustment is handled of a plurality of relay stations in the receiver of the network equipment of wireless cooperation junction network;
Fig. 5 shows according to a specific embodiment of the present invention, is used for bit stream is handled so that the structural representation of the relay station of the steam reliability equalizing of the received bit stream of receiver in the wireless cooperation junction network;
Fig. 6 shows according to a specific embodiment of the present invention, is used for the signal after the bit adjustment is handled from a plurality of relay stations is reduced the structural representation of the receiver handled in the network equipment of wireless cooperation junction network; And
Fig. 7 shows according to a specific embodiment of the present invention, and two system configuration schematic diagrames that are operated in the wireless cooperation relay system of the relay station under the decoding forward direction relaying mode of operation are arranged.
Embodiment
Followingly describe the present invention with reference to accompanying drawing:
Fig. 3 shows according to a specific embodiment of the present invention, is used for bit stream is handled so that the flow chart of the method for the steam reliability equalizing of the received bit stream of receiver in the relay station of wireless cooperation junction network.
In this embodiment, at first execution in step S11 carries out interleaving treatment to bit sequence waiting for transmission, to generate the bit sequence after interleaving treatment;
Secondly execution in step S12 carries out the bit adjustment respectively to a plurality of bits corresponding with each modulation symbol in the described bit sequence after interleaving treatment and handles, to generate the bit sequence after the bit adjustment is handled.
Before step S11, relay station is also tackled the signal from source device that receives and is carried out demodulation, decode and encode again, this is identical with the function that the relay station under the forward direction relaying mode of operation of decoding according to being operated in of prior art is finished, for simplicity's sake, not shown at flow chart shown in Figure 3.
Fig. 3 be of the present invention one preferred embodiment, those skilled in the art will be understood that, in concrete application, step S11 can omit, and adopting the related interleaving treatment of step S11 in this embodiment is in order to distinguish respectively the signal from a plurality of relay stations better at receiving terminal.Under the situation of omitting step S11, step S12 comprises that a plurality of bits corresponding with each modulation symbol in the bit sequence for the treatment of modulation treatment carry out the bit adjustment respectively and handle, to generate the bit sequence after the bit adjustment is handled.
Particularly, different relay stations can adopt identical interlacing pattern when respectively bit sequence waiting for transmission being carried out interleaving treatment, also can adopt different interlacing patterns, and this is that those skilled in the art will be understood that, does not give unnecessary details at this.
Usually, bit reliability depends on the value of bit position and bit.Therefore, for the reliability at the balanced bit of receiving terminal, be operated in different relay stations under the decoding forward direction repeater mode before the signal from same source device that receives is modulated again, can adopt multiple different bit to adjust processing mode.Particularly, described bit is adjusted processing mode can comprise bit position exchange processing mode, it carries out the bit position exchange respectively to a plurality of bits corresponding with each modulation symbol in the described bit sequence handles, to generate the bit sequence after the bit position exchange is handled; Described bit is adjusted processing mode also can comprise bit negate processing mode, and it carries out the bit negate respectively to a plurality of bits corresponding with each modulation symbol in the described bit sequence handles, to generate the bit sequence after the bit negate is handled.It will be understood by those skilled in the art that; described bit is adjusted the bit adjustment processing mode that processing mode can also comprise other type; as long as can change the protection intensity of a plurality of bits corresponding with each modulation symbol in treating the bit sequence of modulation treatment; making the bit that is in weak guard bit originally in the bit stream that a relay station transmits be in strong guard bit in another relay station gets final product; thereby after receiver will merge from the signal of all relay stations, the peculiar more balanced reliability of different ratios.
Further, for a plurality of relay stations that are operated under the decoding forward direction repeater mode in the wireless cooperation junction network, adopt different bit adjustment to handle to treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment in the different relay stations and carry out bit adjustment processing respectively.For example, for having two wireless cooperation junction networks that are operated in the relay station under the decoding forward direction repeater mode, if the exchange of employing bit position is handled a plurality of bits corresponding with described each modulation symbol in the bit sequence that transmits is carried out bit position exchange processing respectively in one of them relay station, to generate the bit sequence after the bit position exchange is handled; So, wherein another relay station then adopts bit negate processing to come a plurality of bits corresponding with each modulation symbol in the bit sequence that transmits are carried out bit negate processing respectively, to generate the bit sequence after the bit negate is handled.
Further, the present invention may be better understood that this technical characterictic is handled in described bit adjustment in conjunction with Fig. 2 a and 2b.Planisphere for the modulation of the 16QAM shown in Fig. 2 a; when adopting the exchange of described bit position to handle to treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment to carry out the bit adjustment respectively to handle; with the bit and the bit exchange position that do not have underscore indicate of script by the underscore sign; so originally, the bit (bit that has underscore to indicate) that is in strong guard bit is in corresponding weak guard bit (bit position that does not have underscore to indicate); correspondingly, the bit of guard bit (bit that does not have underscore to indicate) was in corresponding strong guard bit (bit position that the underscore sign is arranged) a little less than script was in.For the planisphere of the modulation of the 64QAM shown in Fig. 2 b, same being suitable for handled in the exchange of described bit position, and this is that those skilled in the art will be understood that, does not give unnecessary details at this.
Planisphere for the modulation of the 16QAM shown in Fig. 2 a; when adopting described bit negate to handle to treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment to carry out the bit adjustment respectively to handle; bit (bit that the does not have underscore to indicate) negate of weak guard bit will be in originally; and the bit (bit that has underscore to indicate) that is in strong guard bit remains unchanged; like this; change owing to be in the value of the bit of weak guard bit, make the protection intensity that is in the bit of strong guard bit originally change.For the planisphere of the modulation of the 64QAM shown in Fig. 2 b, same being suitable for handled in described bit negate, and this is that those skilled in the art will be understood that, does not give unnecessary details at this.
Particularly, modulation treatment involved in the present invention refers to 2
NContrast system is handled, for example, and 2
NRank QAM, the PSK modulation.Preferably, N is the positive integer more than or equal to 4, and more preferably, the more significant technique effect that has that adopts the above high order modulation processing in 16 rank for relay station is handled in described bit adjustment.It will be understood by those skilled in the art that described modulation system can also comprise the modulation system of other type, does not give unnecessary details at this.
Fig. 4 shows according to a specific embodiment of the present invention, is used for the flow chart to the method for handling from the signal after the bit adjustment is handled of a plurality of relay stations in the receiver of the network equipment of wireless cooperation junction network.
In this embodiment, at first execution in step S21 detects processing to the received signal, to obtain respectively the multiple signals from described a plurality of relay stations;
Next execution in step S22, with in the described detected multiple signals corresponding to the bit sequence that after demodulation process, obtains from one or more signal of making one or more relay stations that the bit adjustment handles carry out with this one or more relay station in bit adjustment contrary adjustment of bit of handling contrary handle, to generate through the contrary bit sequence of adjusting after handling of bit;
Last execution in step S23, to described through processings that deinterleave of the contrary bit sequence of adjusting after handling of bit, with deinterleave bit sequence after the processing of generation.
Particularly, for step S21, after receiver receives multiple signals from a plurality of relay stations, at first, according to the pilot signal that extracts transmission channel is estimated, with the multiway transmission signal that obtains being sent via a plurality of relay station via a plurality of channel transmission coefficients of multiplexing channel, secondly, separate multiple signals from described a plurality of relay stations according to described a plurality of channel transmission coefficients, at last, described multiple signals from a plurality of relay stations being carried out rectification handles.
Particularly, in the described multiple signals from a plurality of relay stations, it is above-mentioned with reference to the described bit adjustment processing of Fig. 3 to have at least one road signal to carry out before sending via this relay station, therefore, after receiver detects described multiple signals from a plurality of relay stations, also need carry out contrary adjustment of bit to one or more signal that in one or more relay stations, carried out bit adjustment processing and handle, carry out the preceding bit arrangement order of bit adjustment processing to restore.
Fig. 4 be of the present invention one preferred embodiment, those skilled in the art will be understood that, in concrete application, if in described a plurality of relay stations that are operated under the decoding forward direction repeater mode, bit sequence waiting for transmission is not carried out interleaving treatment, in the receiver of the network equipment of wireless cooperation junction network, need not execution in step S23 so.The related interleaving treatment of step S11 is in order to isolate respectively the signal from a plurality of relay stations better at receiving terminal in adopting as Fig. 3 in described a plurality of relay stations that are operated under the decoding forward direction repeater mode.
Particularly, the contrary processing mode of adjusting of described bit can comprise the contrary exchange in bit position processing mode, its to the bit sequence that after demodulation process, obtains carry out with this relay station in the bit position exchange contrary exchange in bit position of handling contrary handle, to generate the bit sequence after the contrary exchange in bit position is handled; The contrary processing mode of adjusting of described bit also can comprise the contrary processing mode of bit negate, its to the bit sequence that after demodulation process, obtains carry out with this relay station in bit negate contrary processing of bit negate of handling contrary, to generate the bit sequence through the bit negate is contrary after handling.
Fig. 5 shows according to a specific embodiment of the present invention, is used for bit stream is handled so that the structural representation of the relay station of the steam reliability equalizing of the received bit stream of receiver in the wireless cooperation junction network.This relay station 1 comprises interleaving treatment device 11 and bit adjustment processing unit 12.
At first, interleaving treatment device 11 is used for bit sequence waiting for transmission is carried out interleaving treatment, to generate the bit sequence after interleaving treatment;
Secondly, bit is adjusted processing unit 12 and is used for a plurality of bits corresponding with each modulation symbol of the bit sequence after interleaving treatment are carried out bit adjustment processing respectively, to generate the bit sequence after the bit adjustment is handled.
Particularly, before interleaving treatment device 11, also should comprise the demodulation process device, decoding processing device and code processing apparatus again, this with according to prior art to be operated in the processing unit that the relay station under the decoding forward direction relaying mode of operation comprises identical, for simplicity's sake, not shown in structural representation shown in Figure 5.
Fig. 5 be of the present invention one preferred embodiment, those skilled in the art will be understood that, in concrete application, can omit interleaving treatment device 11 in relay station, adopting interleaving treatment device 11 in this embodiment is in order to isolate respectively the signal from a plurality of relay stations better at receiving terminal.Under the situation that does not adopt interleaving treatment device 11, bit is adjusted processing unit 12 and is carried out bit adjustment processing respectively for the bit sequence a plurality of bits corresponding with each modulation symbol for the treatment of modulation treatment, to generate the bit sequence after the bit adjustment is handled.
Particularly, interleaving treatment device in the different relay stations can adopt identical interlacing pattern when respectively bit sequence waiting for transmission being carried out interleaving treatment, also can adopt different interlacing patterns, this is that those skilled in the art will be understood that, does not give unnecessary details at this.
Usually, bit reliability depends on the value of bit position and bit.Therefore, for the reliability at the balanced bit of receiving terminal, be operated in different relay stations under the decoding forward direction repeater mode before the signal from same source device that receives is modulated again, can adopt multiple different bit to adjust processing unit 12 and treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment and carry out the bit adjustment respectively and handle.Particularly, described bit is adjusted processing unit 12 can comprise the bit position switching apparatus, it is used for that the described bit sequence a plurality of bits corresponding with described each modulation symbol are carried out the bit position exchange respectively handles, to generate the bit sequence after the bit position exchange is handled; Described bit is adjusted processing unit 12 also can comprise bit negate processing unit, and it is used for that the described bit sequence a plurality of bits corresponding with each modulation symbol are carried out the bit negate respectively handles, to generate the bit sequence after the bit negate is handled.It will be understood by those skilled in the art that; described bit is adjusted the bit adjustment processing unit that processing unit 12 can also comprise other type; as long as can change the protection intensity of a plurality of bits corresponding with each modulation symbol in treating the bit sequence of modulation treatment; making the bit that is in weak guard bit originally in a relay station be in strong guard bit in another relay station gets final product; thereby after receiver will merge from the signal of all relay stations, the peculiar more balanced reliability of different ratios.
Further, for a plurality of relay stations that are operated under the decoding forward direction repeater mode in the wireless cooperation junction network, adopt different bit adjustment processing unit to treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment in the different relay stations and carry out bit adjustment processing respectively.For example, for having two wireless cooperation junction networks that are operated in the relay station under the decoding forward direction repeater mode, handle if adopt the bit position switching apparatus that a plurality of bits corresponding with described each modulation symbol in the described bit sequence are carried out the bit position exchange respectively in one of them relay station, to generate the bit sequence after the bit position exchange is handled; So, wherein another relay station then adopts bit negate processing unit that a plurality of bits corresponding with each modulation symbol in the described bit sequence are carried out bit negate processing respectively, to generate the bit sequence after the bit negate is handled.
Further, in conjunction with the technique effect of Fig. 2 a the present invention may be better understood described bit adjusts processing unit 12.Planisphere for the modulation of the 16QAM shown in Fig. 2 a; when adopting described bit position switching apparatus to treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment to carry out the bit adjustment respectively and handle; with the bit and the bit exchange position that do not have underscore indicate of script by the underscore sign; so originally, the bit (bit that underscore indicates) that is in strong guard bit is in corresponding weak guard bit (bit position that does not have underscore to indicate); correspondingly, the bit of guard bit (bit that does not have underscore to indicate) was in corresponding strong guard bit (bit position that the underscore sign is arranged) a little less than script was in.For the planisphere of the modulation of the 64QAM shown in Fig. 2 b, described bit position switching apparatus is suitable equally, and this is that those skilled in the art will be understood that, does not give unnecessary details at this.
Planisphere for the modulation of the 16QAM shown in Fig. 2 a; when adopting described bit negate processing unit to treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment to carry out the bit adjustment respectively and handle; bit (bit that the does not have underscore to indicate) negate of weak guard bit will be in originally; and the bit (bit that has underscore to indicate) that is in strong guard bit remains unchanged; like this; change owing to be in the value of the bit of weak guard bit, make the protection intensity that is in the bit of strong guard bit originally change.For the planisphere of the modulation of the 64QAM shown in Fig. 2 b, described bit negate processing unit is suitable equally, and this is that those skilled in the art will be understood that, does not give unnecessary details at this.
Particularly, modulation treatment involved in the present invention refers to 2
NContrast system is handled, for example, and 2
NRank QAM, the PSK modulation.Preferably, N is the positive integer more than or equal to 4, and more preferably, described bit is adjusted the above high order modulation processing in 16 rank of the more significant technique effect that has processing unit 12 adopts to(for) relay station.It will be understood by those skilled in the art that described modulation system can also comprise the modulation system of other type, does not give unnecessary details at this.
Fig. 6 shows according to a specific embodiment of the present invention, is used for the signal after the bit adjustment is handled from a plurality of relay stations is reduced the structural representation of the receiver handled in the network equipment of wireless cooperation junction network.This receiver 2 comprises signal supervisory instrument 21, contrary processing unit 22 and the processing unit 23 that deinterleaves adjusted of bit.
At first, signal supervisory instrument 21 is used for detecting to the received signal processing, to obtain respectively the multiple signals from described a plurality of relay stations;
Secondly, bit is contrary adjust processing unit 22 be used for will described detected multiple signals corresponding to the bit sequence that after demodulation process, obtains from one or more signal of making one or more relay stations that the bit adjustment handles carry out with this one or more relay station in bit adjustment contrary adjustment of bit of handling contrary handle, to generate the bit sequence through bit is contrary after adjusting processing;
At last, the processing unit 23 of deinterleaving is used for described through processings that deinterleave of the contrary bit sequence of adjusting after handling of bit, with deinterleave bit sequence after the processing of generation.
Particularly, after receiver receives multiple signals from a plurality of relay stations, at first, the signal estimation unit is estimated transmission channel according to the pilot signal that extracts, with the multiway transmission signal that obtains being sent via a plurality of relay station via a plurality of channel transmission coefficients of multiplexing channel, secondly, the signal distinguishing device is according to the multiple signals of described a plurality of channel transmission coefficients differentiations from described a plurality of relay stations, at last, the rectification device carries out the rectification processing with described multiple signals from a plurality of relay stations.For simplicity's sake, signal estimation unit, signal distinguishing device and rectification device are not shown in Fig. 6.
Particularly, in the described multiple signals from a plurality of relay stations, have at least one road signal before sending via this relay station, to adjust processing unit by bit and carried out bit adjustment processing, therefore, after the signal supervisory instrument 21 of receiving terminal detects described multiple signals from a plurality of relay stations, also needed in one or more relay stations, to have carried out one or more signal that the bit adjustment handles and sent into the contrary processing unit 22 of adjusting of bit and carry out contrary adjustment of bit and handle, restoring the bit arrangement order of carrying out before the bit adjustment is handled.
Fig. 6 be of the present invention one preferred embodiment, those skilled in the art will be understood that, in concrete application, if in described a plurality of relay stations that are operated under the decoding forward direction repeater mode, bit sequence waiting for transmission is not carried out interleaving treatment, so in the receiver of the network equipment of wireless cooperation junction network, need not to use deinterleave 23 pairs of processing unit described through the processing that deinterleaves of the contrary bit sequences of adjusting after handling of bit.Adopting interleaving treatment device 11 as shown in Figure 5 in described a plurality of relay stations that are operated under the decoding forward direction repeater mode is in order to distinguish respectively the signal from a plurality of relay stations better at receiving terminal.
Particularly, the contrary processing unit 22 of adjusting of described bit can comprise the contrary switching apparatus in bit position, it is for the contrary exchange processing in bit position of the bit sequence that obtains being carried out handle with the bit position exchange of this relay station contrary after demodulation process, to generate the bit sequence after the contrary exchange in bit position is handled; The contrary processing unit 22 of adjusting of described bit also can comprise the contrary processing unit of bit negate, it is used for the bit sequence that obtains is carried out handling with the bit negate of this relay station contrary processing of bit negate of contrary after demodulation process, to generate the bit sequence through the bit negate is contrary after handling.
Fig. 7 shows according to a specific embodiment of the present invention, and two system configuration schematic diagrames that are operated in the wireless cooperation relay system of the relay station under the decoding forward direction relaying mode of operation are arranged.Those skilled in the art will be understood that, although only show two relay stations among Fig. 7, and two relay stations all are operated under the decoding forward direction relaying mode of operation, but in concrete the application, this wireless cooperation relay system can comprise N relay station, wherein, N is more than or equal to 2, and has at least a relay station to be operated under the decoding forward direction relaying mode of operation to get final product.For simplicity's sake, a transmission course on the direction only is shown among Fig. 7, comprising 31, two relay stations 32 of transmitter of a network equipment (source device) and 32 ' and the receiver 33 of another network equipment (destination device).
Particularly, the wireless cooperation relay system shown in Fig. 7 comprises transmitter 31, the first relay stations, 32, the second relay stations 32 ' and receiver 33.Wherein, first relay station 32 and second relay station 32 ' all are operated under the decoding forward direction relaying mode of operation.
More specifically, first relay station 32 comprises the first interleaving treatment device 321, first bit is adjusted processing unit 322 and first modulation treatment device 323 again, it will be understood by those skilled in the art that, first relay station 32 also should comprise the first demodulation process device before the first interleaving treatment device 321, first decoding processing device and first is code processing apparatus again, and is for simplicity's sake, not shown in Fig. 7.
Second relay station 32 ' comprises the second interleaving treatment device 321 ', second bit is adjusted processing unit 322 ' and second modulation treatment device 323 ' again, it will be understood by those skilled in the art that, second relay station 32 ' also should comprise the second demodulation process device before at the second interleaving treatment device 321 ', second decoding processing device and second is code processing apparatus again, for simplicity's sake, not shown in Fig. 7.
The first and second demodulation process devices are used for the burst from transmitter that receives is carried out demodulation process, to generate the bit sequence after demodulation process;
First and second decoding processing devices are for processing that the bit sequence after demodulation process is decoded, to generate the bit sequence after decoding is handled;
First and second again code processing apparatus be used for processings of encoding again of the bit sequence after handling through decoding, to generate the bit sequence after coding processing again;
The first interleaving treatment device 321 and the second interleaving treatment device 321 ' are used for the bit sequence after coding is handled is again carried out interleaving treatment, to generate the bit sequence after interleaving treatment;
First bit adjusts processing unit 322 and second bit is adjusted processing unit 322 ' for a plurality of bits corresponding with each modulation symbol of the bit sequence after interleaving treatment being carried out bit adjustment processing respectively, to generate the bit sequence after the bit adjustment is handled;
First again modulation treatment device 323 and second again the bit sequence that is used for after the bit adjustment is handled of modulation treatment device 323 ' carry out modulation treatment again, to generate the sequence after modulation treatment again.
Further, different relay stations adopt different bits to adjust processing unit.First bit in first relay station 32 is adjusted processing unit 322 and is comprised the bit position switching apparatus; Second bit in second relay station 32 ' is adjusted processing unit 322 ' and is comprised bit negate device.
Associative list 1, Fig. 2 and Fig. 7 technical scheme that the present invention may be better understood.
The different bits that adopt in table 1 relay station 32 and 32 ' are adjusted processing mode
The bit that has illustrated in the table 1 when adopting 16QAM and two kinds of high order modulation processing modes of 64QAM is respectively adjusted processing mode.In conjunction with the planisphere of the 16QAM shown in Fig. 2 a modulation and the 2nd row in the table 1 as seen, in first relay station 32, adopted the bit position switching apparatus with i
1And i
2And i
3And i
4The bit position exchange, make bit (bit that the has underscore to indicate) i be in strong guard bit originally
2And i
4Be in relative weak guard bit, and be in bit (bit that the does not have underscore to indicate) i of weak guard bit originally
1And i
3Be in relative strong guard bit.In second relay station 32 ', adopted bit negate processing unit with i
1And i
3Carry out negate, i
1And i
3The variation of value will cause i after the negate
2And i
4Protection intensity change.
In conjunction with the planisphere of the 64QAM shown in Fig. 2 b modulation and the 3rd row in the table 1 as seen, in first relay station 32, adopted the bit position switching apparatus with i
1, i
2And i
3And i
4, i
5And i
6The bit position exchange, make the bit (bit that has underscore to indicate) be in strong guard bit originally be in relative weak guard bit, and the bit (bit that does not have underscore to indicate) that is in weak guard bit originally was in relative strong guard bit.In second relay station 32 ', adopted bit negate processing unit with i
2And i
3And i
5And i
6Carry out negate, i respectively
2And i
3And i
5And i
6Carry out respectively that the variation of value will cause i after the negate
1And i
4Protection intensity change.By adjusting processing mode at first relay station 32 bit different with employing in second relay station 32 '; can make the bit that in first relay station 32, is in weak guard bit in second relay station 32 ', be in strong guard bit; thereby after receiver will merge from the signal of two relay stations, the peculiar more balanced reliability of different ratios.
Further, at receiving terminal, receiver 33 receive respectively from first relay station 32 and second relay station 32 ' behind the signal that the bit adjustment is handled, at first, it is sent into signal supervisory instrument detects, this signal supervisory instrument is equal to signal supervisory instrument shown in Figure 6 21, to obtain respectively the two paths of signals from described first relay station 32 and second relay station 32 '; Secondly, to send into the contrary switching apparatus in bit position for the contrary exchange processing in bit position of the bit sequence that obtains being carried out handle with the bit position exchange of this first relay station 32 contrary after demodulation process, to generate the bit sequence after the contrary exchange in bit position is handled from the signal of first relay station 32; To send into the contrary processing unit of bit negate is used for the bit sequence that obtains is carried out handling with the bit negate of this second relay station 32 ' contrary after demodulation process contrary processing of bit negate from the signal of second relay station 32 ', to generate the bit sequence through the bit negate is contrary after handling; Again, to send into the processing unit that deinterleaves respectively through the contrary two-way bit sequence of adjusting after handling of bit, this processing unit that deinterleaves is equal to the processing unit 23 that deinterleaves shown in Figure 6, be used for described through processings that deinterleave respectively of the contrary two-way bit sequence of adjusting after handling of bit, with deinterleave bit sequence after the processing of generation; At last, the two-way bit sequence after handling deinterleaving is sent into and is remerged after decoding processing device is decoded respectively.
More than specific embodiments of the invention are described, it will be appreciated that the present invention is not limited to above-mentioned specific execution mode, those skilled in the art can make various typings and modification within the scope of the appended claims.
Claims (21)
1. one kind is used for bit stream is handled so that the method for the steam reliability equalizing of the received bit stream of receiver in the relay station of wireless cooperation junction network, and wherein, described relay station is operated under the decoding forward direction relaying mode of operation; It is characterized in that, may further comprise the steps:
B. treat a plurality of bits corresponding with each modulation symbol in the bit sequence of modulation treatment and carry out bit adjustment processing respectively, to generate the bit sequence after the bit adjustment is handled.
2. method according to claim 1 is characterized in that, and is further comprising the steps of before the described step b:
A. bit sequence waiting for transmission is carried out interleaving treatment, to generate the bit sequence after interleaving treatment;
Wherein, described step b comprises: a plurality of bits corresponding with each modulation symbol in the described bit sequence after interleaving treatment are carried out the bit adjustment respectively handle, to generate the bit sequence after the bit adjustment is handled.
3. method according to claim 1 and 2 is characterized in that, described step b may further comprise the steps:
-a plurality of bits corresponding with each modulation symbol in the described bit sequence are carried out the bit position exchange respectively handle, to generate the bit sequence after the bit position exchange is handled.
4. method according to claim 1 and 2 is characterized in that, described Bu Sudden b may further comprise the steps:
-a plurality of bits corresponding with each modulation symbol in the described bit sequence are carried out the bit negate respectively handle, to generate the bit sequence after the bit negate is handled.
5. method according to claim 1 and 2 is characterized in that, described modulation treatment comprises 2
NContrast system is handled, and N is the positive integer more than or equal to 4.
6. one kind is used for the signal after the bit adjustment is handled from a plurality of relay stations is reduced the method for handling in the receiver of the network equipment of wireless cooperation junction network, wherein, may further comprise the steps:
Ii. to the bit sequence that after demodulation process, obtains from the signal of making the relay station that the bit adjustment handles carry out with this relay station in bit adjustment contrary adjustment of bit of handling contrary handle, to generate through the contrary bit sequence of adjusting after handling of bit.
7. method according to claim 6 is characterized in that, and is further comprising the steps of before the described step I i:
I. detect processing to the received signal, to obtain respectively the multiple signals from described a plurality of relay stations;
Wherein, described step I i comprises: with in the described detected multiple signals corresponding to the bit sequence that after demodulation process, obtains from one or more signal of making one or more relay stations that the bit adjustment handles carry out with this one or more relay station in bit adjustment contrary adjustment of bit of handling contrary handle, to generate through the contrary bit sequence of adjusting after handling of bit.
8. according to claim 6 or 7 described methods, it is characterized in that, further comprising the steps of after the described step I i:
Iii. to described through processings that deinterleave of the contrary bit sequence of adjusting after handling of bit, with deinterleave bit sequence after the processing of generation.
9. according to claim 6 or 7 described methods, it is characterized in that described step I i may further comprise the steps:
-to the bit sequence that after demodulation process, obtains carry out with this relay station in the bit position exchange contrary exchange in bit position of handling contrary handle, to generate the bit sequence after the contrary exchange in bit position is handled.
10. according to claim 6 or 7 described methods, it is characterized in that described step I i may further comprise the steps:
-to the bit sequence that after demodulation process, obtains carry out with this relay station in bit negate contrary processing of bit negate of handling contrary, to generate the bit sequence through the bit negate is contrary after handling.
11. one kind is used for bit stream is handled so that the relay station of the steam reliability equalizing of the received bit stream of receiver in the wireless cooperation junction network, wherein, described relay station is operated under the decoding forward direction relaying mode of operation; It is characterized in that, comprising:
Bit is adjusted processing unit, carries out the bit adjustment respectively for the bit sequence a plurality of bits corresponding with each modulation symbol for the treatment of modulation treatment and handles, to generate the bit sequence after the bit adjustment is handled.
12. relay station according to claim 11 is characterized in that, also comprises:
The interleaving treatment device is used for bit sequence waiting for transmission is carried out interleaving treatment, to generate the bit sequence after interleaving treatment;
Wherein, described bit is adjusted processing unit and also is used for a plurality of bits corresponding with each modulation symbol of the bit sequence after interleaving treatment are carried out bit adjustment processing respectively, to generate the bit sequence after the bit adjustment is handled.
13., it is characterized in that described bit is adjusted processing unit and comprised according to claim 11 or 12 described relay stations:
The bit position switching apparatus is used for that the described bit sequence a plurality of bits corresponding with described each modulation symbol are carried out the bit position exchange respectively and handles, to generate the bit sequence after the bit position exchange is handled.
14., it is characterized in that described bit is adjusted processing unit and comprised according to claim 11 or 12 described relay stations:
Bit negate processing unit is used for that the described bit sequence a plurality of bits corresponding with each modulation symbol are carried out the bit negate respectively and handles, to generate the bit sequence after the bit negate is handled.
15. according to claim 11 or 12 described relay stations, it is characterized in that described modulation treatment comprises 2
NContrast system is handled, and N is the positive integer more than or equal to 4.
16. one kind is used for the signal after the bit adjustment is handled from a plurality of relay stations is reduced the receiver of handling in the network equipment of wireless cooperation junction network, wherein, comprises:
The contrary processing unit of adjusting of bit, carry out handling the bit of contrary against adjusting processing, with the bit sequence of generation after the contrary adjustment of bit is handled with the bit adjustment of this relay station for the bit sequence that the signal from the relay station of doing bit adjustment processing is obtained after demodulation process.
17. receiver according to claim 16 is characterized in that, also comprises:
Signal supervisory instrument is used for detecting to the received signal processing, to obtain respectively the multiple signals from described a plurality of relay stations;
Wherein, described bit is contrary adjust processing unit also be used for will described detected multiple signals corresponding to the bit sequence that after demodulation process, obtains from one or more signal of making one or more relay stations that the bit adjustment handles carry out with this one or more relay station in bit adjustment contrary adjustment of bit of handling contrary handle, to generate the bit sequence through bit is contrary after adjusting processing.
18. according to claim 16 or 17 described receivers, it is characterized in that, also comprise:
The processing unit that deinterleaves is used for described through processings that deinterleave of the contrary bit sequence of adjusting after handling of bit, with deinterleave bit sequence after the processing of generation.
19., it is characterized in that the contrary processing unit of adjusting of described bit comprises according to claim 16 or 17 described receivers:
The contrary switching apparatus in bit position is for the contrary exchange processing in bit position of the bit sequence that obtains being carried out handle with the bit position exchange of this relay station contrary after demodulation process, to generate the bit sequence after the contrary exchange in bit position is handled.
20., it is characterized in that the contrary processing unit of adjusting of described bit comprises according to claim 16 or 17 described receivers:
The contrary processing unit of bit negate is used for the bit sequence that obtains is carried out handling with the bit negate of this relay station contrary processing of bit negate of contrary after demodulation process, to generate the bit sequence through the bit negate is contrary after handling.
21. wireless cooperation relay system, wherein, comprise a plurality of network equipments and a plurality of relay station, it is characterized in that, at least one relay station is as each described relay station in the claim 11 to 15 in described a plurality of relay station, wherein, the different relay stations in described at least one relay station adopt different bits to adjust processing mode; Described each network equipment comprises as each described receiver in the claim 16 to 20.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2007/002295 WO2009015513A1 (en) | 2007-07-30 | 2007-07-30 | Method and apparatus for realizing bit steam reliability equalizing in wireless cooperative relay network |
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| Publication Number | Publication Date |
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| CN101796744A CN101796744A (en) | 2010-08-04 |
| CN101796744B true CN101796744B (en) | 2013-07-03 |
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| CN200780100091.4A Active CN101796744B (en) | 2007-07-30 | 2007-07-30 | Method and apparatus for realizing bit steam reliability equalizing in wireless cooperative relay network |
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| WO (1) | WO2009015513A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010109282A1 (en) | 2009-03-27 | 2010-09-30 | Nokia Corporation | Apparatus and method for bit remapping in a relay enhanced communication system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512680A (en) * | 2002-12-26 | 2004-07-14 | 横河电机株式会社 | Regenerated relay repeater device and communication system using said device |
| CN1898955A (en) * | 2003-10-29 | 2007-01-17 | 韩国电子通信研究院 | Apparatus and method of on-channel repeater |
| CN1984462A (en) * | 2006-04-07 | 2007-06-20 | 华为技术有限公司 | Wireless network system, its switching method and mobile station-transferring equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1843488A1 (en) * | 2005-02-22 | 2007-10-10 | Matsushita Electric Industrial Co., Ltd. | Radio communication method, relay station device, and radio receiver device |
-
2007
- 2007-07-30 CN CN200780100091.4A patent/CN101796744B/en active Active
- 2007-07-30 WO PCT/CN2007/002295 patent/WO2009015513A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512680A (en) * | 2002-12-26 | 2004-07-14 | 横河电机株式会社 | Regenerated relay repeater device and communication system using said device |
| CN1898955A (en) * | 2003-10-29 | 2007-01-17 | 韩国电子通信研究院 | Apparatus and method of on-channel repeater |
| CN1984462A (en) * | 2006-04-07 | 2007-06-20 | 华为技术有限公司 | Wireless network system, its switching method and mobile station-transferring equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010109282A1 (en) | 2009-03-27 | 2010-09-30 | Nokia Corporation | Apparatus and method for bit remapping in a relay enhanced communication system |
| EP2412110A4 (en) * | 2009-03-27 | 2017-03-15 | Nokia Technologies Oy | Apparatus and method for bit remapping in a relay enhanced communication system |
Also Published As
| Publication number | Publication date |
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| WO2009015513A1 (en) | 2009-02-05 |
| CN101796744A (en) | 2010-08-04 |
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