CN101164243A - Hybrid orthogonal frequency division multiple access system and method - Google Patents
Hybrid orthogonal frequency division multiple access system and method Download PDFInfo
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- CN101164243A CN101164243A CNA2006800133562A CN200680013356A CN101164243A CN 101164243 A CN101164243 A CN 101164243A CN A2006800133562 A CNA2006800133562 A CN A2006800133562A CN 200680013356 A CN200680013356 A CN 200680013356A CN 101164243 A CN101164243 A CN 101164243A
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- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
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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
- H04L27/2647—Arrangements specific to the receiver only
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- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- 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
- H04L5/023—Multiplexing of multicarrier modulation signals
- H04L5/026—Multiplexing of multicarrier modulation signals using code division
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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
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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- 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
- H04L5/023—Multiplexing of multicarrier modulation signals
Abstract
A hybrid orthogonal frequency division multiple access (OFDMA) system including a transmitter and a receiver is disclosed. The transmitter includes a first spread OFDMA subassembly, a first non-spread OFDMA subassembly and a first common subassembly. The first spread OFDMA subassembly spreads input data and maps the spread data to a first group of subcarriers. The first non-spread OFDMA subassembly maps input data to a second group of subcarriers. The first common subassembly transmits the input data mapped to the first and second group of subcarriers using OFDMA. The receiver includes a second spread OFDMA subassembly, a second non-spread OFDMA subassembly and a second common subassembly. The second common subassembly processes received data to recover data mapped to the subcarriers using OFDMA. The second spread OFDMA subassembly recovers the first input data by separating user data in a code domain and the second non-spread OFDMA subassembly recovers the second input data.
Description
Technical field
The present invention is relevant with wireless communication system.More particularly, the present invention is relevant with a kind of hybrid orthogonal frequency division multiple access system and method.
Background technology
It similarly is broadband services for the user radio the Internet access that following wireless communication system provides expection.This broadband services need spread all over the reliable of a radio channel and high throughput transmission, and it has time dispersiveness and frequency selectivity usually.This radio channel then is restricted frequency spectrum and the withered restriction that causes internal symbol to disturb (ISI) of multipath.For the next generation wireless communication network, orthogonal frequency division multitask (OFDM) then is most promising answer with orthogonal frequency division multiple access (OFDMA).
The orthogonal frequency division multitask has spectral efficient, because this subcarrier that uses in this orthogonal frequency division multitask system overlaps in frequency, just can spread all over subcarrier and utilize a kind of suitable Modulation and Coding Scheme (MCS).In addition, the execution of orthogonal frequency division multitask is very simple, because this baseband modulation and demodulation can utilize quick Fourier conversion of simple counter-rotating (IFFT) and quick Fourier conversion (FFT) operation to carry out.Other advantage of this orthogonal frequency division multitask then comprises the good robust property in a kind of simple receiver architecture and the multi-path environment.
Orthogonal frequency division multitask and orthogonal frequency division multiple access are adopted by many Wireless/wired communication standards, similarly be digital audio broadcasting (DAB), walk ground formula digital audio broadcasting (DAB-T), IEEE 802.11a/g, IEEE 802.16, asymmetric (ADSL), and be to consider employing in third generation partner program (3GPP) long-run development (LTE), demal CDMA 2000 (CDMA 2000) development, the 4th generation (4G) wireless communication system, IEEE 802.11n or the like.
The subject matter of orthogonal frequency division multitask and orthogonal frequency division multiple access is be difficult to eliminate or control inner cell element to disturb, to reach one the frequency recycling factor.Frequency agility between the cell element and sub-media allocation of carriers approach to cooperation have been suggested to eliminate inner cell element and have disturbed.Yet the efficient of these two kinds of methods all is restricted.
Summary of the invention
The present invention is relevant with a kind of hybrid orthogonal frequency division multiple access (OFDMA) system and method.This system comprises a transmitter and a receiver.This transmitter comprises one first and launches orthogonal frequency division multiple access sub-component, one first non-expansion orthogonal frequency division multiple access sub-component and one first common sub-component.This first expansion orthogonal frequency division multiple access sub-component launches input data and this expanding data to one first group of subcarriers of videoing.This first non-expansion orthogonal frequency division multiple access sub-component reflection input data to one second group of subcarriers.This first common sub-component utilizes the input data of orthogonal frequency division multiple access transmission reflection to this first and second group of subcarriers.This receiver comprises one second and launches orthogonal frequency division multiple access sub-component, one second non-expansion orthogonal frequency division multiple access sub-component and one second common sub-component.This second common sub-component utilizes orthogonal frequency division multiple access to handle and receives data, to recover the data of reflection to this subcarrier.This second expansion orthogonal frequency division multiple access sub-component recovers this first input data by the mode that user's data is deployed in yard territory, and this second non-expansion orthogonal frequency division multiple access sub-component then is used to recover this second input data.
Description of drawings
Demonstration hybrid orthogonal frequency division multiple access (OFDMA) the system block diagram of Fig. 1 for being disposed according to the present invention.
Fig. 2 shows the example that frequency domain is launched and subcarrier is videoed according to the present invention.
Fig. 3 shows another example that expansion and subcarrier are videoed according to the present invention.
Fig. 4 shows the example that carries out the jump of subcarrier temporal frequency according to the present invention.
The demonstration temporal frequency rake formula combiner block figure of Fig. 5 for being disposed according to the present invention.
Embodiment
After this, term " transmitter " with " receiver " comprise but be not limited to a kind of user and dispose (UE), wireless transmission receiving element (WTRU), mobile radio station, fixed or portable subscriber unit, calling set, Node B, base station, positioner, access point, or any device form with operational capacity in wireless environment.
Feature of the present invention can be combined among the integrated circuit (IC), or is configured among the circuit that comprises many interconnecting units.
The present invention can be applied to any wireless communication system that utilizes orthogonal frequency division multiple access (or orthogonal frequency division multitask) and/or demal code division multiple access (CDMA), similarly be IEEE 802.11, IEEE 802.16, the third generation (3G) cell element formula system, the 4th generation (4G) system, satellite communication system or the like.
Fig. 1 be according to the present invention demonstration hybrid orthogonal frequency division multiple access system 10 block diagrams, it comprises a transmitter 100 and a receiver 200.This transmitter 100 comprises one and launches orthogonal frequency division multiple access sub-component 130, one a non-expansion orthogonal frequency division multiple access sub-component 140 and a common sub-component 150.Launch in orthogonal frequency division multiple access sub-component 130 at this, (being used for one or more user's) input data 101 are to utilize a kind of spreading codes to launch, and producing most chips 103, and this chip 103 then is mapped to subcarrier.In this non-expansion orthogonal frequency division multiple access sub-component 140, subcarrier is not launched just to map in 111 of (being used for one or more user's) input positions.
This expansion orthogonal frequency division multiple access sub-component 130 comprises a spreader 102 and one first subcarrier launches unit map 104.This non-expansion orthogonal frequency division multiple access sub-component 140 comprises a serial changes sequence (S/P) transducer 112 and one second subcarrier unit map 114.This common sub-component 150 comprises N point idft conversion (IDFT) processor 122, a sequence changes serial (P/S) transducer 124 and a Cyclic Prefix (CP) inserts unit 126.
Suppose in this system, to have N subcarrier, and have K different users in this system, to communicate by letter at the same time, between K user, just transfer data to K by this expansion orthogonal frequency division multiple access sub-component 130
SIndividual user.Employed number of sub carrier wave is respectively N in this expansion orthogonal frequency division multiple access sub-component 130 and this non-expansion orthogonal frequency division multiple access sub-component 140
SWith N
ON
SWith N
ONumerical value satisfy 0≤N
S≤ N, 0≤N
O≤ N and N
S+ N
OThe condition of≤N.
These input data 101 are launched most most chips 103 by this spreader 102.103 of this chips launch unit map 104 by this subcarrier and video to this N
SIndividual subcarrier.This expansion can be in time-domain, in the frequency domain or among both, carry out.For a specific user, in this time-domain with this frequency domain in the expansion factor then be respectively SF
tWith SF
fIt is united and launches the factor and then be SF for this user
Joint, it equals SF
t* SF
fWork as SF
t=1 o'clock, this expansion was only carried out in frequency domain, and works as SF
f=1 o'clock, this expansion was just only carried out in the territory on opportunity.Launch then to be subjected to being dispensed to the number of sub carrier wave N of this user i for the frequency domain of user i
S(i) restriction.The distribution of this subcarrier can be static state or dynamic.At N for each user i
S(i)=N
SIn the situation, this expansion orthogonal frequency division multiple access then becomes a kind of orthogonal frequency division multitask.
Launch in the orthogonal frequency division multiple access sub-component 130 at this, a subcarrier can map to the user more than.In this case, 101 of input data that map to two or more users of same sub-carrier become a yard multitask, and therefore should utilize different spreading codes to launch.If launching is to carry out in the Time And Frequency territory simultaneously,, have nothing in common with each other just obtain the spreading codes that is assigned to the user among both in this time-domain, this frequency domain.
Fig. 2 shows the example that frequency domain is launched and subcarrier is videoed according to the present invention.These input data 101 are to carry out multitasking by a multiplexer 202 with a spreading codes 204, to produce most chips 103 '.This chip 103 ' changes sequence transducer 206 by a serial and is converted to sequence chip 103.This each sequence chip 103 then be sent to this idft conversion processor 122 before, all by these subcarrier unit map 104 reflections to one of this subcarrier.
Fig. 3 shows another example that frequency domain is launched and subcarrier is videoed according to the present invention.Replacement is handled by the eastern worker that a spreader carries out spreading codes, and it utilizes a duplicator 302 with a chip rate each input data 101 to be repeated repeatedly to produce chip 103 '.This chip 103 ' then changes sequence transducer 304 by a serial and is converted to sequence chip 103.This each sequence chip 103 then be sent to this idft conversion processor 122 before, all by these subcarrier unit map 104 reflections to one of this subcarrier.
Substitute, when input data when launching in this time-domain, each input data is all launched producing most chip crossfires by a spreader, and this chip crossfire then is mapped to subcarrier.In this case, this time-domain is launched also can utilize to repeat this input data simply, and does not use the mode of a spreading codes to carry out.
Common pilots can be transmitted on this subcarrier that launches to use in the orthogonal frequency division multiple access sub-component 130.In order to differentiate, also common pilots can be launched with other user's data.
Refer again to Fig. 1, in this non-expansion orthogonal frequency division multiple access sub-component 140, different users's input position 111 is changeed sequence transducer 112 by this serial and is converted to sequence bit 113.This subcarrier unit map 114 distributes users to one or more subcarrier, so each subcarrier used by a user at most, and is then videoed to the subcarrier that is dispensed to this user by this subcarrier unit map from each user's position.In submethod, the user in this frequency domain for multitask.The number of sub carrier wave that is dispensed to user i then is denoted as N
OAnd 0≤N (i),
O(i)≤N
OThis subcarrier allocation can be static state or dynamic.
According to the present invention, this non-expansion orthogonal frequency division multiple access sub-component 140 can be with a kind of pseudo-random way time of implementation frequency agility in each cell element.Jump by time-domain, the user of transmitting in a cell element then changes (change speech, aspect one or more orthogonal frequency division multitask symbol or picture frame) in time.Jump by frequency domain, be dispensed to the subcarrier that transmits the user in the cell element, just jump at each or several orthogonal frequency division multitask symbols or picture frame place.In the method, can eliminate and average inside cell element interference between this user and cell element.
Fig. 4 shows that description is a kind of according to temporal frequency jump example of the present invention, and it uses 10 subcarrier s0-s9 in the time durations of T0-T6.As example, be to be used to launch orthogonal frequency division multiple access at Fig. 2 sub-carriers s3, s5, s8, remaining subcarrier then is used for non-expansion orthogonal frequency division multiple access.For the subcarrier that is allocated in non-expansion orthogonal frequency division multiple access, the subcarrier and the time durations that are dispensed to the user are to jump with a kind of pseudo-random way.For example, the data that are used for user 1 are passed through s9, are passed through s7, pass through s7, transmit by s1 and s9 at T4 at T3 at T1 at T0, and the data that are used for user 2 are then passed through s4, passed through s6, pass through s3, transmit by s0 and s4 at T4 at T2 at T1 at T0.Therefore, it transfers data to different users by different orthogonal frequency division multitask symbols or picture frame, and eliminates inner cell element and disturb.
Refer again to Fig. 1, this chip 105 is provided to this idft conversion processor 122 with these data 115.This idft conversion processor 122 is converted to time-domain data 123 with this chip 105 with these data 115.This idft conversion processor 122 can utilize quick Fourier conversion of counter-rotating (IFFT) or operation of equal value to carry out.These time-domain data 123 are then changeed serial convertor 124 by this sequence and are converted to serial data 125.Then insert unit 126 Cyclic Prefix (also be known as a kind of escorting during (GP)) is added to this serial data 125 by this Cyclic Prefix.Then reached this wireless channel 160 transmission data 127.
This receiver 200 comprises and is used for one of orthogonal frequency division multiple access expansion orthogonal frequency division multiple access sub-component 230, one a non-expansion orthogonal frequency division multiple access sub-component 240 and a common sub-component 250.This common sub-component 250 comprises a cp removal unit 202, sequence transducer 204, the conversion of N point discrete Fourier (DFT) processor 206, an equalizer 208 and a subcarrier de-mapping unit 210 are changeed in a serial.This expansion orthogonal frequency division multiple access sub-component 230 comprises one yard territory user's separative element 214 and this non-expansion orthogonal frequency division multiple access sub-component 240 comprises a sequence and changes serial convertor 216.
The data 201 that this receiver 200 receives by this Channel Transmission.This cp removal unit 202 removes Cyclic Prefix from receiving data 201.After Cyclic Prefix removes, just change sequence transducer 204 for the data 203 of time-domain data and be converted to sequence data 205 by this serial.This sequence data 205 is provided to this Discrete Fourier Transform processor 206, just is converted to frequency domain data 207, and it means N sequence data on N subcarrier.This discrete Fourier conversion can be carried out by quick Fourier conversion or equivalence operation.This frequency domain data 207 is provided to this equalizer 208, and in changes such as each subcarrier execution data.As in traditional orthogonal frequency division multitask system, can use a kind of simple single order (one-tap) equalizer.
After to each subcarrier grade, corresponding to being separated by this subcarrier de-mapping unit 210 once specific user's data, it is a kind ofly to launch the performed reverse operating of unit map 104,114 at these transmitter 100 places by subcarrier.In this non-expansion orthogonal frequency division multiple access sub-component 240, this sequence is changeed serial convertor 216 each user's data 211 is converted to serial data 217 simply.Launch in orthogonal frequency division multiple access sub-component 230 at this, 212 of data on this separated subcarriers are further handled by this yard territory user's separative element 214.According to the expansion mode of doing in these transmitter 100 places, just in this yard territory user's separative element 214, carry out corresponding user and separate.For example, launch if only in this time-domain, carry out this, just can use a kind of traditional rake formula combiner as this yard territory user's separative element 214 at these transmitter 100 places.If only in this frequency domain, carry out this expansion at these transmitter 100 places, just can use a kind of tradition (frequency domain) separate spreader as this yard territory user's separative element 214.If be in execution expansion in this time-domain and this frequency domain, just can use a kind of temporal frequency rake formula combiner as this yard territory user's separative element 214 at this transmitter 100.
Demonstration temporal frequency rake formula combiner 500 block diagrams of Fig. 5 for being disposed according to the present invention.The processing that this demonstration temporal frequency rake formula combiner 500 is carried out in time-domain and frequency domain is to recover being in the data of launching in this time-domain and this frequency domain at this transmitter 100.It should be noted that this temporal frequency rake formula combiner 500 also can utilize different modes to carry out, the configuration that is provided among Fig. 5 be example be not restriction, and viewpoint of the present invention also is not limited to structure shown among Fig. 5.
This temporal frequency rake formula combiner 500 comprises separates a spreader 502 and a rake formula combiner 504.For a specific user, separated and the data 212 of collecting in order to launch orthogonal frequency division multiple access sub-component 230 by this subcarrier de-mapping unit 210 among Fig. 1, then be delivered to this and separate spreader 502.This is separated spreader 502 and carries out the frequency preface territory of these data 212 separate expansion on this subcarrier.This separate spreader 502 comprise be used for these data 212 spreading codes conjugation 508 of multitasking most multiplexers 506, be used to add up the totalling device 512 of multiplying output 510 and be used for normalization and should export 514 normalizer 516 by totalling.This is separated and launches output 518 then by these rake formula combiner 504 processing, in order to recovering this user's data with the mode of time-domain combination.
Refer again to Fig. 1, this transmitter 100, this receiver 200 or both can comprise multiple antenna, and can utilize multiple antenna to carry out according to hybrid orthogonal frequency division multiple access of the present invention at transmitter side, receiver-side or both places.
Embodiment
1. a hybrid orthogonal frequency division multiple access (OFDMA) system, it comprises a transmitter and a receiver.This transmitter comprises that one first launches the orthogonal frequency division multiple access sub-component, imports data in order to launch one of one first user group first, and expanding data is videoed to one first group of subcarriers; One first non-expansion orthogonal frequency division multiple access sub-component is in order to import data mapping to one second group of subcarriers with second; And one first common sub-component, transmission map to this of this first group of subcarriers and second group of subcarriers first imported data and second data in order to use orthogonal frequency division multiple access.This receiver comprises one second common sub-component, handles the data that received in order to utilize hybrid orthogonal frequency division multiple access, to recover the data of reflection to this subcarrier; One second launches the orthogonal frequency division multiple access sub-component, in order to recover this first input data; And one second non-expansion orthogonal frequency division multiple access sub-component, in order to recover this second input data.
2. as the system of embodiment 1, wherein this first expansion orthogonal frequency division multiple access sub-component launches this first input data in one of them at least in a time-domain and a frequency domain.
3. as the system of embodiment 2, wherein this first expansion orthogonal frequency division multiple access sub-component repeats these first input data and launches this first input data with a chip rate.
4. as the system of arbitrary embodiment among the embodiment 1 ~ 3, wherein this first launches orthogonal frequency division multiple access sub-component and this first non-expansion orthogonal frequency division multiple access sub-component this subcarrier of dynamically videoing.
5. as the system of arbitrary embodiment among the embodiment 1 ~ 4, wherein this first expansion orthogonal frequency division multiple access sub-component transmits common pilots on this first group of subcarriers.
6. as the system of arbitrary embodiment among the embodiment 1 ~ 5, wherein this first non-expansion orthogonal frequency division multiple access sub-component is jumping this second input data mapping time of implementation territory to this second group of subcarriers and frequency domain is jumped at least one of them.
7. as the system of arbitrary embodiment among the embodiment 1 ~ 6, wherein second of this receiver expansion orthogonal frequency division multiple access sub-component comprises a rake formula combiner.
8. as the system of arbitrary embodiment among the embodiment 1 ~ 7, wherein the second orthogonal frequency division multiple access sub-component of this receiver comprises a time frequency rake formula combiner.
9. as the system of arbitrary embodiment among the embodiment 1 ~ 8, wherein at least this transmitter and this receiver one of them comprises multiple antenna at least.
10. a hybrid orthogonal frequency division multiple access (OFDMA) system, it comprises a transmitter and a receiver.This transmitter comprises a spreader, is used to launch the first input data of one first user group, to produce chip; One first subcarrier unit map, it is used for this chip reflection to one first group of subcarriers; Sequence (S/P) transducer is changeed in one first serial, is used for the second input data of one second user group are converted to first sequence data; One second subcarrier unit map, it is used for this first sequence data reflection to this second group of subcarriers; One idft conversion (IDFT) processor is in order to the idft conversion is carried out in the output of this first subcarrier unit map and this second subcarrier unit map, to produce a time numeric field data; One first sequence is changeed serial (P/S) transducer, in order to these time-domain data are converted to serial data; And one Cyclic Prefix (CP) insert the unit, be used for a Cyclic Prefix is inserted into this serial data to transmit.This receiver comprises a cp removal unit, is used for removing a Cyclic Prefix from received data; The sequence transducer is changeed in one second serial, is converted to second sequence data in order to the output with this cp removal unit; One discrete Fourier conversion (DFT) processor is used for this second sequence data is carried out the discrete Fourier conversion, to produce frequency domain data; One equalizer is used for changes such as this frequency domain data execution; One subcarrier de-mapping unit, its this first user group and this second user group etc. change after, separate this frequency domain data; One yard territory user's separative element after the gradeization of its this first user group in one yard territory, separates this frequency domain data, to recover this first data; And one second sequence change serial convertor, it is after gradeizations of this second user group, changing this frequency domain data is serial data, second imports data to recover this.
11. as the system of embodiment 10, wherein this spreader launches this first input data in one of them at least in a time-domain and a frequency domain.
12. as embodiment 11 described systems, wherein this spreader repeats these first input data and launches this first input data with a chip rate.
13. as the system of arbitrary embodiment among the embodiment 10 ~ 12, this first subcarrier unit map and the second subcarrier unit map this subcarrier of dynamically videoing wherein.
14. as the system of arbitrary embodiment among the embodiment 10 ~ 13, wherein this transmitter transmits common pilots on this first group of subcarriers.
15. as the system of arbitrary embodiment among the embodiment 10 ~ 14, wherein this second subcarrier unit map is jumped in this second input data mapping time of implementation territory to this second group of subcarriers and frequency domain is jumped at least one of them.
16. as the system of arbitrary embodiment among the embodiment 10 ~ 15, wherein this yard territory user's separative element comprises a rake formula combiner.
17. as the system of arbitrary embodiment among the embodiment 10 ~ 16, wherein this yard territory user's separative element comprises a time frequency rake formula combiner.
18. as the system of arbitrary embodiment among the embodiment 10 ~ 17, wherein one of them comprises multiple antenna at least in this transmitter and this receiver.
19. a method of utilizing hybrid orthogonal frequency division multiple access (OFDMA) with the transmission data, wherein, at a transmitter place, the first input data of launching one first user group are to produce chip; This chip is videoed to one first group of subcarriers; The second input data of one second user group are converted to first sequence data; This first sequence data is videoed to one second group of subcarriers; Idft conversion (IDFT) is carried out in the data output that maps to this first group of subcarriers and this second group of subcarriers, to produce a time numeric field data; These time-domain data are converted to serial data; (CP) is inserted into this serial data with a Cyclic Prefix; And transmit this Cyclic Prefix and insert data; And, at a receiver place, receive data by this transmitter transmitted; Remove a Cyclic Prefix from these reception data; This Cyclic Prefix is removed data be converted to second sequence data; This second sequence data is carried out discrete Fourier conversion (DFT), to produce frequency domain data; To this frequency domain data grade; This first user group and this second user group etc. change after, separate this frequency domain data; The data of separating this first user group in the sign indicating number territory are to recover this first data; And the data of this second user group are converted to serial data, to recover the second input data.
20., wherein carry out the expansion of these first input data at least in one of them in a time-domain and a frequency domain as the method for embodiment 19.
21., wherein repeat the expansion that these first input data are carried out these first input data with a chip rate as embodiment 20 described methods.
22. as the method for arbitrary embodiment among the embodiment 19 ~ 21, this first group of subcarriers of wherein dynamically videoing and this second group of subcarriers.
23., comprise that more this transmitter transmits common pilots on this first group of subcarriers as the method for arbitrary embodiment among the embodiment 19 ~ 22.
24. as the method for arbitrary embodiment among the embodiment 19 ~ 23, wherein in this first sequence data is videoed to this second group of subcarriers, time of implementation territory jump is jumped one of them with frequency domain at least.
25., wherein utilize a rake formula combiner to be executed in and carry out the data of separating this first user group in one yard territory as the method for arbitrary embodiment among the embodiment 19 ~ 24.
26., wherein utilize a time frequency rake formula combiner to be executed in and carry out the data of separating this first user group in one yard territory as the method for arbitrary embodiment among the embodiment 19 ~ 25.
Though feature of the present invention and assembly are narrated in the particular combinations mode in preferred embodiment, each feature also can be used with further feature of the present invention and assembly separately and not with assembly, or with further feature of the present invention with assembly or carry out different combinations separately.
Claims (26)
1. a hybrid orthogonal frequency division multiple access (OFDMA) system, it comprises:
One transmitter comprises:
One first launches the orthogonal frequency division multiple access sub-component, imports data in order to launch one of one first user group first, and expanding data is videoed to one first group of subcarriers;
One first non-expansion orthogonal frequency division multiple access sub-component is in order to import data mapping to one second group of subcarriers with second; And
One first common sub-component, transmission map is to these first input data and second data of this first group of subcarriers and second group of subcarriers in order to use orthogonal frequency division multiple access; And
One receiver comprises:
One second common sub-component is handled the data that received in order to utilize hybrid orthogonal frequency division multiple access, to recover the data of reflection to this subcarrier;
One second launches the orthogonal frequency division multiple access sub-component, in order to recover this first input data; And
One second non-expansion orthogonal frequency division multiple access sub-component is in order to recover this second input data.
2. system according to claim 1 is characterized in that, this first expansion orthogonal frequency division multiple access sub-component launches this first input data in one of them at least in a time-domain and a frequency domain.
3. system according to claim 2 is characterized in that, this first expansion orthogonal frequency division multiple access sub-component repeats these first input data and launches this first input data with a chip rate.
4. system according to claim 1 is characterized in that, this first launches orthogonal frequency division multiple access sub-component and this first non-expansion orthogonal frequency division multiple access sub-component this subcarrier of dynamically videoing.
5. system according to claim 1 is characterized in that, this first expansion orthogonal frequency division multiple access sub-component transmits common pilots on this first group of subcarriers.
6. system according to claim 1 is characterized in that, this first non-expansion orthogonal frequency division multiple access sub-component is jumping this second input data mapping time of implementation territory to this second group of subcarriers and frequency domain is jumped at least one of them.
7. system according to claim 1 is characterized in that, second of this receiver launches the orthogonal frequency division multiple access sub-component and comprises a rake formula combiner.
8. system according to claim 1 is characterized in that, the second orthogonal frequency division multiple access sub-component of this receiver comprises a time frequency rake formula combiner.
9. system according to claim 1 is characterized in that, one of them comprises multiple antenna at least for this transmitter and this receiver at least.
10. a hybrid orthogonal frequency division multiple access (OFDMA) system is characterized in that it comprises:
One transmitter comprises:
One spreader is used to launch the first input data of one first user group, to produce chip;
One first subcarrier unit map, it is used for this chip reflection to one first group of subcarriers;
Sequence (S/P) transducer is changeed in one first serial, is used for the second input data of one second user group are converted to first sequence data;
One second subcarrier unit map, it is used for this first sequence data reflection to this second group of subcarriers;
One idft conversion (IDFT) processor is in order to the idft conversion is carried out in the output of this first subcarrier unit map and this second subcarrier unit map, to produce a time numeric field data;
One first sequence is changeed serial (P/S) transducer, in order to these time-domain data are converted to serial data; And
One Cyclic Prefix (CP) inserts the unit, is used for a Cyclic Prefix is inserted into this serial data to transmit; And
One receiver comprises:
One cp removal unit is used for removing a Cyclic Prefix from received data;
The sequence transducer is changeed in one second serial, is converted to second sequence data in order to the output with this cp removal unit;
One discrete Fourier conversion (DFT) processor is used for this second sequence data is carried out the discrete Fourier conversion, to produce frequency domain data;
One equalizer is used for changes such as this frequency domain data execution;
One subcarrier de-mapping unit, its this first user group and this second user group etc. change after, separate this frequency domain data;
One yard territory user's separative element after the gradeization of its this first user group in one yard territory, separates this frequency domain data, to recover this first data; And
One second sequence is changeed serial convertor, and it is after the gradeization of this second user group, and changing this frequency domain data is serial data, to recover this second input data.
11. system according to claim 10 is characterized in that, this spreader launches this first input data in one of them at least in a time-domain and a frequency domain.
12. system according to claim 11 is characterized in that, this spreader repeats these first input data and launches this first input data with a chip rate.
13. system according to claim 10 is characterized in that, this first subcarrier unit map and the second subcarrier unit map this subcarrier of dynamically videoing.
14. system according to claim 10 is characterized in that, this transmitter transmits common pilots on this first group of subcarriers.
15. system according to claim 10 is characterized in that, this second subcarrier unit map is jumped in this second input data mapping time of implementation territory to this second group of subcarriers and frequency domain is jumped at least one of them.
16. system according to claim 10 is characterized in that, this yard territory user's separative element comprises a rake formula combiner.
17. system according to claim 10 is characterized in that, this yard territory user's separative element comprises a time frequency rake formula combiner.
18. system according to claim 10 is characterized in that, one of them comprises multiple antenna at least in this transmitter and this receiver.
19. a method of utilizing hybrid orthogonal frequency division multiple access (OFDMA) with the transmission data, this method comprises:
At a transmitter place
The first input data of launching one first user group are to produce chip;
This chip is videoed to one first group of subcarriers;
The second input data of one second user group are converted to first sequence data;
This first sequence data is videoed to one second group of subcarriers;
Idft conversion (IDFT) is carried out in the data output that maps to this first group of subcarriers and this second group of subcarriers, to produce a time numeric field data;
These time-domain data are converted to serial data;
(CP) is inserted into this serial data with a Cyclic Prefix; And
Transmit this Cyclic Prefix and insert data; And
At a receiver place
Reception is by data that this transmitter transmitted;
Remove a Cyclic Prefix from these reception data;
This Cyclic Prefix is removed data be converted to second sequence data;
This second sequence data is carried out discrete Fourier conversion (DFT), to produce frequency domain data;
To this frequency domain data grade;
This first user group and this second user group etc. change after, separate this frequency domain data;
The data of separating this first user group in the sign indicating number territory are to recover this first data; And
The data of this second user group are converted to serial data, to recover the second input data.
20. method according to claim 19 is characterized in that, carries out the expansion of these first input data at least in one of them in a time-domain and a frequency domain.
21. method according to claim 20 is characterized in that, repeats the expansion that these first input data are carried out these first input data with a chip rate.
22. method according to claim 19 is characterized in that, this first group of subcarriers of dynamically videoing and this second group of subcarriers.
23. method according to claim 19 is characterized in that, comprises that more this transmitter transmits common pilots on this first group of subcarriers.
24. method according to claim 19 is characterized in that, in this first sequence data is videoed to this second group of subcarriers, time of implementation territory jump is jumped one of them with frequency domain at least.
25. method according to claim 19 is characterized in that, utilizes a rake formula combiner to be executed in and carries out the data of separating this first user group in one yard territory.
26. method according to claim 19 is characterized in that, utilizes a time frequency rake formula combiner to be executed in and carries out the data of separating this first user group in one yard territory.
Applications Claiming Priority (3)
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|---|---|---|---|
| US67387205P | 2005-04-22 | 2005-04-22 | |
| US60/673,872 | 2005-04-22 | ||
| US11/406,878 | 2006-04-19 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101182126A Division CN102143118A (en) | 2005-04-22 | 2006-04-20 | Hybrid orthogonal frequency division multiple access system and method |
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|---|---|
| CN101164243A true CN101164243A (en) | 2008-04-16 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2006800133562A Pending CN101164243A (en) | 2005-04-22 | 2006-04-20 | Hybrid orthogonal frequency division multiple access system and method |
| CNU2006200061222U Expired - Lifetime CN2935645Y (en) | 2005-04-22 | 2006-04-21 | Transmitter and receiver of mixing orthogonal frequency division multiple access system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNU2006200061222U Expired - Lifetime CN2935645Y (en) | 2005-04-22 | 2006-04-21 | Transmitter and receiver of mixing orthogonal frequency division multiple access system |
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| CN (2) | CN101164243A (en) |
| AR (3) | AR053857A1 (en) |
| DE (1) | DE202006006460U1 (en) |
| MY (1) | MY151888A (en) |
| TW (6) | TWI416894B (en) |
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|---|---|---|---|---|
| KR100816032B1 (en) | 2007-02-13 | 2008-03-24 | 삼성전자주식회사 | Method of data transmission with iterative multi-user detection, and aparatus using the same |
| KR100857907B1 (en) * | 2007-04-16 | 2008-09-10 | 한국전자통신연구원 | Apparatus and method for receive diversity for detecting random access preambles in communications system |
| KR100866984B1 (en) * | 2007-04-16 | 2008-11-05 | 한국전자통신연구원 | Apparatus and method for receive diversity for detecting random access preambles in communictions system |
| CN101562838B (en) * | 2008-04-15 | 2011-06-29 | 创新音速有限公司 | Method and apparatus for improving transmission time interval bundling |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08237170A (en) * | 1995-02-27 | 1996-09-13 | Kokusai Electric Co Ltd | Transmission system for spread spectrum signal and its inverse spread synchronous reception system |
| JPH10107683A (en) * | 1996-09-26 | 1998-04-24 | Murata Mfg Co Ltd | Spread spectrum communication device |
| US6795424B1 (en) * | 1998-06-30 | 2004-09-21 | Tellabs Operations, Inc. | Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems |
| FR2784821B1 (en) | 1998-10-16 | 2000-12-15 | Cit Alcatel | SPECTRUM SPREAD TRANSMISSION SYSTEM WITH FILTERED MULTI-CARRIER MODULATION |
| JP4119696B2 (en) * | 2001-08-10 | 2008-07-16 | 松下電器産業株式会社 | Transmitting apparatus, receiving apparatus, and wireless communication method |
| US6754169B2 (en) * | 2001-12-13 | 2004-06-22 | Motorola, Inc. | Method and system of operation for a variable transmission mode multi-carrier communication system |
| JP2003309533A (en) * | 2002-04-17 | 2003-10-31 | Matsushita Electric Ind Co Ltd | Wireless transmitter, wireless receiver, and method thereof |
| JP3987858B2 (en) * | 2004-01-27 | 2007-10-10 | 株式会社エヌ・ティ・ティ・ドコモ | Wireless communication system, wireless transmission device, wireless reception device, and wireless communication method |
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2006
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- 2006-04-21 DE DE202006006460U patent/DE202006006460U1/en not_active Expired - Lifetime
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| DE202006006460U1 (en) | 2006-11-02 |
| KR101236865B1 (en) | 2013-03-21 |
| KR101302411B1 (en) | 2013-09-02 |
| KR20120052912A (en) | 2012-05-24 |
| MY151888A (en) | 2014-07-14 |
| TW201445915A (en) | 2014-12-01 |
| TWI455510B (en) | 2014-10-01 |
| KR101304227B1 (en) | 2013-09-05 |
| TW200642341A (en) | 2006-12-01 |
| TWI532337B (en) | 2016-05-01 |
| TW201004192A (en) | 2010-01-16 |
| CN2935645Y (en) | 2007-08-15 |
| AR073183A2 (en) | 2010-10-20 |
| AR053857A1 (en) | 2007-05-23 |
| KR20120112288A (en) | 2012-10-11 |
| TW201637410A (en) | 2016-10-16 |
| TWI416894B (en) | 2013-11-21 |
| TWI590626B (en) | 2017-07-01 |
| KR20110056263A (en) | 2011-05-26 |
| TWI527437B (en) | 2016-03-21 |
| KR101304228B1 (en) | 2013-09-05 |
| TW201444312A (en) | 2014-11-16 |
| KR20060111416A (en) | 2006-10-27 |
| TWM298282U (en) | 2006-09-21 |
| AR075129A2 (en) | 2011-03-09 |
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