CN101577934B - Method and device for multiplexing multi-user time slot - Google Patents
Method and device for multiplexing multi-user time slot Download PDFInfo
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- CN101577934B CN101577934B CN2008101059543A CN200810105954A CN101577934B CN 101577934 B CN101577934 B CN 101577934B CN 2008101059543 A CN2008101059543 A CN 2008101059543A CN 200810105954 A CN200810105954 A CN 200810105954A CN 101577934 B CN101577934 B CN 101577934B
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Abstract
The embodiment of the invention provides a method and a device for multiplexing a multi-user time slot, belonging to the communication field. The method comprises the steps of acquiring signal-noise ratio (SNR) of a plurality of users for satisfying the requirement of receiving signals, assigning bits of high-level modulation marks to the users according to the demodulation performance of bits of the high-lever modulation marks and the signal-noise ratio (SNR) of the users for satisfying the requirement of receiving signals, and mapping the signals of the users to the bits of the high-level modulation marks assigned to the users. The invention also provides the device for multiplexing a multi-user time slot, a method for receiving a multi-user signal and a receiving terminal device. The method and the device ensure the communication quality of a plurality of users and the service quality of the users and improve the sound capacity of a system without introducing a new pilot frequency sequence.
Description
Technical field
The present invention relates to network communication field, relate in particular to a kind of method and device of multiplexing multi-user time slot.
Background technology
(Global System for Mobile Communications GSM), is a kind of time-multiplexed system to global system for mobile communications, and the radio channel resource that different CUs is different, each time slot can only have a user to insert simultaneously.Along with being on the increase of number of users, the radio channel resource in the system is also fewer and feweri, and the voice capacity that how further to improve system also is one of focus of current research.
In order to solve the problems of the technologies described above, third generation partner program (the 3rd Generation PartnerProject, 3GPP) be organized in Radio Access Network (GSM/EDGE Raido Access Network, GERAN) set up the multiplexing time slot of a plurality of users (Multi User Reuse OneSlot in the 36th meeting, MUROS) project seminar, the main research direction of MUROS project seminar is exactly: make the multiplexing same wireless channel time slot of a plurality of voice users.Consider the coordination between the user, the performance of system, capacity etc., what at first consider is two users of a timeslot multiplex.
For two users of a timeslot multiplex, prior art provides two users' of an a kind of timeslot multiplex implementation method, and this method comprises the steps: as shown in Figure 1
Step 11, transmitting terminal with two users' Guassian Minimum Shift Keying GMSK (Gaussian filteredMinimum Shift Keying, GMSK) signal map sends to component, quadrature component two-way in the same way, and distinguishes the user by different pilot frequency sequences;
In realizing process of the present invention, the inventor finds prior art, and there are the following problems:
Because receiving terminal carries out signal processing by the SAIC algorithm in the prior art, so being used as another one user's signal as interference signal, this method handles, again because two users' signal sends with constant power, so when another one user's channel quality is better, this signal is very big to the interference of the relatively poor subscriber signal of channel quality, this will influence the relatively poor user's communications quality of channel quality, make the relatively poor user's communications quality of channel quality be difficult to guarantee, and this method also need to introduce new pilot frequency sequence.
Summary of the invention
In view of above-mentioned existing in prior technology problem, embodiment of the present invention provides a kind of method and device of multiplexing multi-user time slot, described method and apparatus, can guarantee two user's communications quality simultaneously, thereby under the situation that improves the system voice capacity, guarantee quality of services for users, and do not needed to introduce new pilot frequency sequence.
The specific embodiment of the present invention provides a kind of method of multiplexing multi-user time slot,
Obtain a plurality of users' the required signal-to-noise ratio SNR that satisfies received signal;
According to the bit demodulation performance of high order modulation symbol and the described a plurality of users' that obtain the required SNR that satisfies received signal the bit of high order modulation symbol is distributed to described a plurality of user;
The bit of the high order modulation symbol that described a plurality of users' signal map is assigned to described a plurality of users.
The specific embodiment of the present invention also provides a kind of device of multiplexing multi-user time slot,
Acquiring unit is used to obtain a plurality of users' the required signal-to-noise ratio SNR that satisfies received signal;
Allocation units are used for according to the bit demodulation performance of high order modulation symbol and the described a plurality of users' that obtain the required signal-to-noise ratio SNR that satisfies received signal the bit of high order modulation symbol being distributed to a plurality of users;
Map unit is used for the bit of high order modulation symbol that described a plurality of users' signal map is assigned to described a plurality of users.
The method that the specific embodiment of the invention also provides a kind of multiple user signals to receive, described method comprises:
The high order modulation symbol after the reception mapping and the bit allocation result of high order modulation symbol;
The high order modulation symbol of the described reception of demodulation, and according to the signal that obtains the user the high order modulation symbol of described bit allocation result after demodulation.
The specific embodiment of the invention also provides a kind of receiving end device, and described device comprises:
Receiving element is used to receive the high order modulation symbol after the mapping and the bit allocation result of high order modulation symbol;
Acquiring unit is used for the high order modulation symbol of the described reception of demodulation, and according to the signal that obtains the user the high order modulation symbol of described bit allocation result after demodulation.
By the above-mentioned technical scheme that provides as can be seen, the technical scheme of the embodiment of the invention according to a plurality of users' required signal-to-noise ratio that satisfies received signal and high order modulation symbol the bit demodulation performance, the bit that distributes the high order modulation symbol, thereby carry a plurality of users' signal respectively by bits different in the high order modulation symbol, with the non-interfering purpose of the signal that reaches each user, a plurality of user's communications quality have been guaranteed, thereby under the situation that improves the system voice capacity, guaranteed quality of services for users, in addition, also do not need to introduce new pilot frequency sequence.
Description of drawings
The flow chart of two users' of a timeslot multiplex that Fig. 1 provides for prior art implementation method;
The flow chart of the method for the multiplexing multi-user time slot that Fig. 2 provides for the specific embodiment of the invention;
The demodulation performance schematic diagram of the 8PSK individual bit position that Fig. 3 provides for the specific embodiment of the invention;
The 8PSK individual bit position that Fig. 4 provides for the specific embodiment of the invention and the demodulation performance schematic diagram of many bits of 8PSK;
The flow chart of the method for the multiplexing multi-user time slot that Fig. 5 provides for the embodiment of the invention 1;
The flow chart of the method for the multiplexing multi-user time slot that Fig. 6 provides for the embodiment of the invention 2;
The flow chart of the method for the multiplexing multi-user time slot that Fig. 7 provides for the embodiment of the invention 3;
The structure chart of the device of the multiplexing multi-user time slot that Fig. 8 provides for the specific embodiment of the invention;
The flow chart of the method that the multiple user signals that Fig. 9 provides for the specific embodiment of the invention receives;
The structure chart of the receiving end device that Figure 10 provides for the specific embodiment of the invention.
Embodiment
Embodiment of the present invention provides a kind of method of multiplexing multi-user time slot, this method provides a kind of implementation method of multiplexing multi-user time slot by the mode of high order modulation, its specific implementation method can for: by a plurality of users' the required signal-to-noise ratio that satisfies received signal (Signal to Noise Ratio, SNR) difference, the bit that distributes the high order modulation symbol, thereby carry two users' signal respectively by bits different in the high order modulation symbol, with the non-interfering purpose of the signal that reaches each user, a plurality of user's communications quality have been guaranteed, thereby under the situation that improves the system voice capacity, guarantee quality of services for users, and do not needed to introduce new pilot frequency sequence.
The specific embodiment of the invention provides a kind of method of multiplexing multi-user time slot, and as shown in Figure 2, this method can comprise:
Step 21, obtain a plurality of users' the required SNR that satisfies received signal.
The concrete grammar of realizing this step can be referring to the relevant regulations of gsm protocol 45.008.
Step 22, the bit of high order modulation symbol is distributed to a plurality of users according to the bit demodulation performance of high order modulation symbol and a plurality of users' the required SNR that satisfies received signal;
Such as, can the bit of high order modulation symbol be distributed to a plurality of users according to a plurality of users' the required height that satisfies the SNR of received signal, concrete mode of distributing can be in the following method any:
Method A, the high user of required SNR who satisfies received signal among a plurality of users is distributed in the individual bit position that demodulation performance is high in the high order modulation symbol, the individual bit position that demodulation performance is low in the high order modulation symbol is distributed to the low user of required SNR who satisfies received signal among a plurality of users;
Method B, a plurality of bits in the high order modulation symbol are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, the individual bit position in the high order modulation symbol is distributed to the low user of required SNR who satisfies received signal among described a plurality of user;
Method C, a plurality of bits that demodulation performance in the high order modulation symbol is high are distributed to the high user of required SNR who satisfies received signal among a plurality of users, and a plurality of bits that demodulation performance in the high order modulation symbol is low are distributed to the low user of required SNR who satisfies received signal among a plurality of users.
Need to prove, also the bit of high order modulation symbol can be distributed to a plurality of users arbitrarily.
The bit of step 23, high order modulation symbol that a plurality of users' signal map is assigned to a plurality of users;
As adopt under the situation of distribution method of said method A, realize this step method can for, the user's that the required SNR that satisfies received signal among a plurality of users is high signal map high individual bit position of demodulation performance in the high order modulation symbol, the user's that the required SNR that satisfies received signal among a plurality of users is the low signal map low individual bit position of demodulation performance in the high order modulation symbol.
As adopt under the situation of distribution method of said method B, realize this step method can for, the user's that the required SNR that satisfies received signal among a plurality of users is high signal redundancy is mapped to a plurality of bits of assigned high order modulation symbol, with the user's that the required SNR that satisfies received signal is low among a plurality of users the signal map individual bit position to assigned high order modulation symbol.
As adopt under the situation of distribution method of said method C, realize this step method can for, the user's that the required SNR that satisfies received signal among a plurality of users is high signal redundancy is mapped in the high a plurality of bits of demodulation performance in the assigned high order modulation symbol, and the user's that the required SNR that satisfies received signal among a plurality of users is low signal redundancy is mapped to the low a plurality of bits of demodulation performance in the assigned high order modulation symbol.
The described method of the specific embodiment of the invention can also comprise, with the bit allocation result transmission of high order modulation symbol after the mapping and high order modulation symbol.The bit allocation result of this high order modulation symbol sends and can send by message, also can notify the bit allocation result of high order modulation symbol by a kind of signaling.
Above-mentioned high order modulation symbol can for, 8 phase phase keying symbols (8 phase shift keying, 8PSK), 16 phase quadrature amplitude modulations (16 quadrature amplitude modulation, 16QAM) symbol or 32 phase quadrature amplitude modulation 32QAM symbols.Said method can be realized that this transmitting terminal can be the baseband signal modulation dispensing device of base station by transmitting terminal.
Below in conjunction with Fig. 3, Fig. 4 the operation principle of the embodiment of the invention and the technique effect that is reached are described.As shown in Figure 3, Fig. 3 is the demodulation performance schematic diagram of the individual bit position of 8PSK symbol, and wherein BER represents bit error rate (Bit Error Rate), and Eb/N0 represents signal to noise ratio.According to Fig. 3 as can be seen, the demodulation performance of 8PSK symbol first bit and second bit is just the same, and on same curve, and the demodulation performance of the 3rd bit is lower than the demodulation performance of first bit or second bit.Fig. 4 is the demodulation performance schematic diagram of 8PSK individual bit position and many bits of 8PSK.Can draw according to Fig. 3 and Fig. 4,, just can satisfy the demodulation needs of different user, and each bit can not form interference between mutual in 8PSK symbol the signal map of different user different bits to the 8PSK symbol; And transmitting terminal can recently be selected the bit of different demodulation performances according to the required noise that satisfies received signal of different user, thereby can come dynamic assignment to have the bit of different demodulation performances according to the required signal-to-noise ratio that satisfies received signal of different user, to reach the purpose of dynamic adjustment bit.
Be example with 10% BER below, the demodulation gain when two users select the different bit of different 8PSK symbols for use is described, concrete data are referring to table 1:
Table 1
| User A | User B | The gain (dB) of the relative user B of user A, 10 % | |
| Mode | |||
| 1 | 1,2 bits | The 3rd bit | 6.5 |
| |
2,3 bits (or 1,3) | The 1st bit (or 2nd) | 1.7 |
| |
The 1st bit (or 2nd) | 2,3 bits (or 1,3) | -1.7 |
| |
The |
1,2 bits | -6.5 |
For better describing the described method of embodiment of the present invention, now in conjunction with the accompanying drawings the specific embodiment of the present invention is described:
Embodiment 1: the embodiment of the invention 1 provides a kind of method of multiplexing multi-user time slot, and present embodiment is that example illustrates concrete implementation method with two users.
The technology scene of present embodiment is: the mode of high order modulation is 8PSK, and the high order modulation symbol can be the 8PSK symbol, can be referring to the relevant regulations of gsm protocol 45.004 about the associated description of 8PSK; Suppose that two users are user A and user B, and the required SNR that satisfies received signal of user A is than the required SNR height that satisfies received signal of user B.This method can comprise as shown in Figure 5:
Step 51, obtain the required SNR that satisfies received signal of user A and user B.
Step 52, the bit of 8PSK symbol is distributed to user A, user B according to the bit demodulation performance of 8PSK symbol and the required SNR that satisfies received signal of user A, user B.
Its concrete method of salary distribution can for following any:
Mode A, the individual bit position that demodulation performance is high in the 8PSK symbol distributed to the high user of required SNR who satisfies received signal among user A and the user B.With the present embodiment is example, the SNR height that user A is required, then demodulation performance in the 8PSK symbol is distributed to user A in the individual bit position preferably, such as first bit in the 8PSK symbol or second bit are distributed to user A, the SNR of user B is low, then transmitting terminal is distributed to user B with the relatively poor bit of demodulation performance in the 8PSK symbol, and the 3rd bit that is about in the 8PSK symbol is distributed to user B.Certainly in actual conditions, also can distribute the bit in the 8PSK symbol arbitrarily, as first bit in the 8PSK symbol is distributed to user A, second bit in the 8PSK symbol is distributed to user B.
Method B, a plurality of bits in the 8PSK symbol are distributed to the high user of required signal-to-noise ratio SNR who satisfies received signal among user A and the user B.With the present embodiment is example, and the SNR height that user A is required then can all be distributed to user A with first bit in the 8PSK symbol and second bit, in this case, just the 3rd bit can only be distributed to user B.In addition, also first bit in the 8PSK symbol (or second bit) and the 3rd bit user A can be distributed to, in this case, second bit (or first bit) user B can only be distributed to.With reference to table 1, suppose that the required SNR of SNR that user A is required and user B differs under the less situation, preferentially selection mode 2, suppose that the required SNR of SNR that user A is required and user B differs under the big situation, and preferentially selection mode 1.
Step 53, with the signal of user A, the signal of user B, be mapped to the bit of the 8PSK symbol that is assigned to respectively.
Corresponding to Bit Allocation in Discrete modes different in the step 52, Ying She mode is also different herein:
If in the time of described in the bit of the 8PSK symbol that user A, user B are assigned to such as the mode A in the step 52, the signal map of user A can be arrived first bit or second bit of 8PSK symbol, the signal map of user B be arrived the 3rd bit of 8PSK symbol.
If the bit that user A is assigned to is first bit and second bit, when the bit that user B is assigned to is the 3rd bit, the signal redundancy of user A can be mapped to first bit and second bit, with signal map to the three bits of user B.Be the concrete mode that example illustrates mapping in the mode in the table 11 below, the signal bit value of supposing user A here is 1, and the signal bit value of user B is 0, and then the 8PSK symbol after the mapping is 110.
The present embodiment method can also comprise, with the allocation result transmission of 8PSK symbol after the mapping and 8PSK sign bit position.
In the present embodiment 1 described method according to two users' the required SNR that satisfies received signal, the bit that distributes the 8PSK symbol, thereby carry two users' signal respectively by bits different in the 8PSK symbol, to reach two non-interfering purposes of subscriber signal, two user's communications quality have been guaranteed, thereby under the situation that improves the system voice capacity, guaranteed quality of services for users, in addition, because the signal redundancy of the user A that the required SNR that satisfies received signal among two users is higher is mapped in a plurality of bits in the 8PSK symbol, can obtain better demodulation performance, and not need to introduce new pilot frequency sequence.
Embodiment 2: the specific embodiment of the present invention provides the method for another kind of multiplexing multi-user time slot, and present embodiment is that example illustrates the specific implementation method with three users.
The technology scene of present embodiment is, the mode of high order modulation is 16QAM, the high order modulation symbol can be the 16QAM symbol, certainly high-order modulating also can be 32QAM in actual conditions, its implementation and 16QAM are basic identical, and the bit of different is 16QAM symbol has 4, and the bit of 32QAM symbol has 5, the bit that the 32QAM symbol can be assigned with is more, and the mode of allocation bit position is also more; Associated description about 16QAM can be referring to the relevant regulations of gsm protocol 45.004, wherein the demodulation performance of different bits is similar with the demodulation performance of different bits in the 8PSK symbol in the 16QAM symbol, the height that is demodulation performance in the 16QAM symbol is first bit, second bit, the 3rd bit, the 4th bit in proper order.Suppose that three users are user A, user B and user C, the height that the user satisfies the required SNR of received signal is in proper order: user C, user B, user A.This method can comprise as shown in Figure 6:
Step 61, obtain the required SNR that satisfies received signal of user A, user B and user C.
Step 62, the bit of 16QAM symbol is distributed to user A, user B and user C according to the required SNR that satisfies received signal of the bit demodulation performance of 16QAM symbol and user A, user B, user C.
Its concrete method of salary distribution can for following any:
Mode C, the individual bit position that demodulation performance is high in the 16QAM symbol distributed to the high user of required SNR who satisfies received signal among user A, user B and the user C.With the present embodiment is example, the required SNR of user A is low, then transmitting terminal is distributed to user A with the relatively poor bit of demodulation performance in the 16QAM symbol, the 3rd bit in the 16QAM symbol or the 4th bit can be distributed to user A so, required SNR time of user B is high, then the higher bit of demodulation performance in the 16QAM symbol can be distributed to user B, second bit that is about in the 16QAM symbol is distributed to user B, the required SNR of user C is the highest, then the highest bit of demodulation performance in the 16QAM symbol can be distributed to user C, promptly distribute to user C first bit; Certainly in actual conditions, the bit that user A, user B, user C are distributed also can be respectively, the 4th bit, the 3rd bit, second bit; Certainly in actual conditions, also can adjust the bit of distribution according to user A, user B, the required SNR of user C, just differing here one has illustrated for example.
Mode D, a plurality of bits in the 16QAM symbol are distributed to the high user of required SNR who satisfies received signal among user A, user B and the user C.With the present embodiment is example, the required SNR height of user C, then transmitting terminal is all distributed to user C with first bit in the 16QAM symbol and second bit, required SNR time of user B is high, then the 3rd bit in the 16QAM symbol is distributed to user B, the required SNR of user A is minimum, then the 4th bit in the 16QAM symbol is distributed to user A.Certainly in actual conditions, also first bit and the 4th bit can be distributed to user C, second bit is distributed to user B, the 3rd bit is distributed to user A, certainly the method for salary distribution that in actual conditions, also has other, the bit that is distributed as user A, user B, user C also can be respectively, the 3rd bit, first bit, second, four bits can also have other the method for salary distribution, just differ one here for example.
Step 63, the signal with user A, the signal of user B, the signal of user C are mapped to the bit of the 16QAM symbol that is assigned to respectively.
Realize this step method can for: when the bit of distributing to user A, user B, user C is under the situation of individual bit position, directly with the signal map of the signal of the signal of user A, user B, user C to assigned bit.
When the bit of distributing to user C is under the situation of a plurality of bits, and its implementation is, the signal redundancy of user C is mapped to assigned a plurality of bits.Illustrate with a real example below, suppose that the assigned bit of user C is first bit and the 4th bit, user A is assigned to the 3rd bit, user B is assigned to second bit, the signal bit value of user A, user B, user C is respectively, 1,1,0, then the mapping after the 16QAM symbol can for, 0110.
Embodiment 3: the specific embodiment of the present invention also provides a kind of method of multiplexing multi-user time slot, and present embodiment is that example illustrates the specific implementation method with two users.
The technology scene of present embodiment is, the mode of high order modulation is 16QAM, and the high order modulation symbol can be the 16QAM symbol, suppose that two users are user A, the height that user B, two users satisfy the required SNR of received signal is in proper order: user A, user B, this method comprises as shown in Figure 7:
Step 71, obtain the required SNR that satisfies received signal of user A, user B.
Step 72, a plurality of bits that the demodulation performance in the 16QAM symbol is high are distributed to the high user of required SNR who satisfies received signal among user A, the user B, and a plurality of bits that the demodulation performance in the 16QAM symbol is low are distributed to the low user of required SNR who satisfies received signal among user A, the user B.
Realize this step method can for, because the required SNR height of present embodiment user A, so first bit in the 16QAM symbol and second bit can be distributed to user A, the 3rd bit in the 16QAM symbol and the 4th bit are distributed to user B, certainly the method for salary distribution that also has other differs one herein for example.
Step 73, with the signal of the signal of user A, user B, be mapped to the bit of the 16QAM symbol that is assigned to respectively.
Realize this step method can for, the signal redundancy of user A is mapped in first bit and second bit of 16QAM symbol, the signal redundancy of user B is mapped in the 3rd bit and the 4th bit of 16QAM symbol.Illustrate with a real example below, suppose that the signal bit value of user A, user B is respectively, 1,0, then the mapping after the 16QAM symbol can for, 1100.
The specific embodiment of the invention also provides a kind of device of multiplexing multi-user time slot, and this installs as shown in Figure 8, comprising:
Acquiring unit 81 is used to obtain a plurality of users' the required signal-to-noise ratio SNR that satisfies received signal;
Allocation units 82, the required SNR that satisfies received signal that is used for a plurality of users that bit demodulation performance and acquiring unit 81 according to the high order modulation symbol obtain distributes to a plurality of users with the bit of high order modulation symbol;
Map unit 83 is used for the bit of high order modulation symbol that a plurality of users' signal map is assigned to described a plurality of users.
Above-mentioned allocation units 82 are distributed to the corresponding description that a plurality of users' mode can the reference method execution mode with the bit of high order modulation symbol.
Said apparatus can also comprise, transmitting element 84 is used to send the high order modulation symbol after the mapping and the bit allocation result of high order modulation symbol.
Above-mentioned allocation units 82 can comprise one or more of following module:
Single-bit distribution module 821, be used for the individual bit position that high order modulation symbol demodulation performance is high and distribute to the required high user of signal to noise ratio snr who satisfies received signal among a plurality of users, the individual bit position that demodulation performance is low in the described high order modulation symbol is distributed to the low user of required SNR who satisfies received signal among described a plurality of user;
Bit Allocation in Discrete module 822, be used for a plurality of bits of described high order modulation symbol are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, the individual bit position in the described high order modulation symbol distributed to the low user of required SNR who satisfies received signal among described a plurality of user;
Many Bit Allocation in Discrete module 823, be used for the high a plurality of bits of described high order modulation symbol demodulation performance are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, a plurality of bits that demodulation performance is low in the described high order modulation symbol distributed to the low user of required SNR who satisfies received signal among described a plurality of user.
Undertaken by single-bit distribution module 821 at above-mentioned allocation units 82 under the situation of bit distribution, the user's that map unit 83 is high with the required SNR that satisfies received signal among described a plurality of users the high individual bit position of the demodulation performance of signal map in assigned high order modulation symbol, the user's that the required SNR that satisfies received signal among described a plurality of users is the low low individual bit position of the demodulation performance of signal map in assigned high order modulation symbol.
Undertaken by Bit Allocation in Discrete module 822 at above-mentioned allocation units 82 under the situation of bit distribution, the user's that map unit 83 is high with the required SNR that satisfies received signal among described a plurality of users signal redundancy is mapped in a plurality of bits of assigned high order modulation symbol, and the user's that the required SNR that satisfies received signal among described a plurality of users is low signal map is to the individual bit position of assigned high order modulation symbol.
Undertaken by many Bit Allocation in Discrete module 823 at above-mentioned allocation units 82 under the situation of bit distribution, the user's that map unit 83 is high with the required SNR that satisfies received signal among described a plurality of users signal redundancy is mapped in the high a plurality of bits of demodulation performance in the assigned high order modulation symbol, and the user's that the required SNR that satisfies received signal among described a plurality of users is low signal redundancy is mapped to the low a plurality of bits of demodulation performance in the assigned high order modulation symbol.
Identical among the high order modulation symbol that relates in this device and the inventive method embodiment just repeats no more here.
The described device of embodiment of the present invention, obtain a plurality of users' the required SNR that satisfies received signal by acquiring unit 81, and distribute the bit of high order modulation symbol by allocation units 82, map unit 83 is with a plurality of users' the signal map bit to assigned high order modulation symbol.Thereby guaranteed a plurality of user's communications quality, improved under the situation of system voice capacity, guaranteed quality of services for users, and do not disturbed the quality of other subscriber signal, and do not needed to introduce new pilot frequency sequence.
The method that the specific embodiment of the invention also provides a kind of multiple user signals to receive, this method comprises the steps: as shown in Figure 9
The high order modulation symbol after step 91, the reception mapping and the bit allocation result of high order modulation symbol.
The high order modulation symbol of step 92, the described reception of demodulation, and according to the signal that obtains the user the high order modulation symbol of described bit allocation result after demodulation.
Realize this step method can for, if the signal that receives the user is in the individual bit position, here be that example illustrates with the signal that receives the user at first bit, certainly also can be other bit in actual conditions, know according to allocation result to receive subscriber signal, directly obtain the information of first bit behind the demodulation high order modulation symbol then at first bit.If the signal that receives the user is at a plurality of bits, here be that example illustrates with the signal that receives the user at first bit and second bit, know that according to allocation result the reception subscriber signal is at first bit and second bit, directly obtain the information of first bit and second bit behind the demodulation high order modulation symbol then, then the information addition of the information of first bit and second bit can be obtained user's signal.
The method that the multiple user signals that the specific embodiment of the invention provides receives, supported the realization of above-mentioned multiplexing multi-user time slot method, thereby and then under the situation that improves the system voice capacity, guaranteed quality of services for users, and do not disturb the quality of other subscriber signal, and do not need to introduce new pilot frequency sequence.
The specific embodiment of the invention also provides a kind of receiving end device, and this installs as shown in figure 10, comprising: receiving element 101 is used to receive the high order modulation symbol after the mapping and the bit allocation result of high order modulation symbol; Acquiring unit 102 is used for the high order modulation symbol that demodulate reception unit 101 receives, and obtains user's signal the high order modulation symbol of bit allocation result after demodulation according to receiving element 101 receptions.
Wherein the principle of obtaining of acquiring unit 102 can be referring to the associated description in the method for above-mentioned multiple user signals reception.
The described device of embodiment of the present invention, by the high order modulation symbol after the receiving element 101 reception mappings and the bit allocation result of high order modulation symbol, and obtain user's signal the high order modulation symbol of bit allocation result after demodulation that receives by acquiring unit 102 and according to receiving element 101, thereby supported the realization of said method.And then under the situation that improves the system voice capacity, guaranteed quality of services for users, and do not disturbed the quality of another subscriber signal, and do not needed to introduce new pilot frequency sequence.
" obtaining " speech in the embodiment of the invention can be understood as and initiatively obtains from other modules also can be to receive the information that other modules are sent.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method can instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
In sum, the technical scheme that the specific embodiment of the invention provides, mode by high order modulation sends a plurality of users' the signal map different bits to the high order modulation symbol, thereby a plurality of user's communications quality have been guaranteed, under the situation that improves the system voice capacity, guarantee quality of services for users, and do not needed to introduce the advantage of new pilot frequency sequence.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
1. the method for a multiplexing multi-user time slot is characterized in that, described method comprises:
Obtain a plurality of users' the required signal-to-noise ratio SNR that satisfies received signal;
According to the bit demodulation performance of high order modulation symbol and the described a plurality of users' that obtain the required SNR that satisfies received signal the bit of high order modulation symbol is distributed to described a plurality of user;
The bit of the high order modulation symbol that described a plurality of users' signal map is assigned to described a plurality of users;
Described method also comprises:
The bit allocation result of high order modulation symbol after the mapping and high order modulation symbol is sent.
2. method according to claim 1, it is characterized in that described bit demodulation performance and described a plurality of users' the required SNR that satisfies received signal according to the high order modulation symbol distributes to a plurality of users with the bit of high order modulation symbol and comprise following any one mode at least:
The high user of required SNR who satisfies received signal among described a plurality of user is distributed in the individual bit position that demodulation performance is high in the described high order modulation symbol, the individual bit position that demodulation performance is low in the described high order modulation symbol is distributed to the low user of required SNR who satisfies received signal among described a plurality of user;
Or a plurality of bits in the described high order modulation symbol are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, the individual bit position in the described high order modulation symbol is distributed to the low user of required SNR who satisfies received signal among described a plurality of user;
Or a plurality of bits that demodulation performance is high in the described high order modulation symbol are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, a plurality of bits that demodulation performance is low in the described high order modulation symbol are distributed to the low user of required SNR who satisfies received signal among described a plurality of user.
3. method according to claim 2, it is characterized in that, a plurality of bits in the described high order modulation symbol are being distributed to the high user of required SNR who satisfies received signal among described a plurality of user, individual bit position in the described high order modulation symbol is distributed under the low user's of the required SNR that satisfies received signal among described a plurality of user the situation, described signal map with a plurality of users comprises to the bit of the high order modulation symbol that described a plurality of users are assigned to:
The user's that the required SNR that satisfies received signal among described a plurality of users is high signal redundancy is mapped in a plurality of bits of assigned high order modulation symbol, and the user's that the required SNR that satisfies received signal among described a plurality of users is low signal map is to the individual bit position of assigned high order modulation symbol.
4. method according to claim 2, it is characterized in that, a plurality of bits that demodulation performance is high in described high order modulation symbol are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, a plurality of bits that demodulation performance is low in the described high order modulation symbol are distributed under the low user's of the required SNR that satisfies received signal among described a plurality of user the situation, described signal map with a plurality of users comprises to the bit of the high order modulation symbol that described a plurality of users are assigned to:
The user's that the required SNR that satisfies received signal among described a plurality of users is high signal redundancy is mapped in the high a plurality of bits of demodulation performance in the assigned high order modulation symbol, and the user's that the required SNR that satisfies received signal among described a plurality of users is low signal redundancy is mapped to the low a plurality of bits of demodulation performance in the assigned high order modulation symbol.
5. according to the arbitrary described method of claim 1～4, it is characterized in that described high order modulation symbol comprises:
8 phase phase keying 8PSK symbols, 16 phase quadrature amplitude modulation 16QAM symbols or 32 phase quadrature amplitude modulation 32QAM symbols.
6. the device of a multiplexing multi-user time slot is characterized in that, described device comprises:
Acquiring unit is used to obtain a plurality of users' the required signal-to-noise ratio SNR that satisfies received signal;
Allocation units are used for according to the bit demodulation performance of high order modulation symbol and the described a plurality of users' that obtain the required signal-to-noise ratio SNR that satisfies received signal the bit of high order modulation symbol being distributed to a plurality of users;
Map unit is used for the bit of high order modulation symbol that described a plurality of users' signal map is assigned to described a plurality of users;
Transmitting element is used to send the high order modulation symbol after the mapping and the bit allocation result of high order modulation symbol.
7. device according to claim 6 is characterized in that, described allocation units comprise a kind of in the following module at least:
The single-bit distribution module, be used for the individual bit position that high order modulation symbol demodulation performance is high and distribute to the high user of required signal-to-noise ratio SNR who satisfies received signal among a plurality of users, the individual bit position that demodulation performance is low in the described high order modulation symbol is distributed to the low user of required SNR who satisfies received signal among described a plurality of user;
The Bit Allocation in Discrete module, be used for a plurality of bits of described high order modulation symbol are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, the individual bit position in the described high order modulation symbol distributed to the low user of required SNR who satisfies received signal among described a plurality of user;
Many Bit Allocation in Discrete module, be used for the high a plurality of bits of described high order modulation symbol demodulation performance are distributed to the high user of required SNR who satisfies received signal among described a plurality of user, a plurality of bits that demodulation performance is low in the described high order modulation symbol distributed to the low user of required SNR who satisfies received signal among described a plurality of user.
8. device according to claim 7, it is characterized in that, undertaken by described single-bit distribution module at described allocation units under the situation of bit distribution, the user's that described map unit is high with the required SNR that satisfies received signal among described a plurality of users the high individual bit position of the demodulation performance of signal map in assigned high order modulation symbol, the user's that the required SNR that satisfies received signal among described a plurality of users is the low low individual bit position of the demodulation performance of signal map in assigned high order modulation symbol;
Undertaken by described Bit Allocation in Discrete module at described allocation units under the situation of bit distribution, the user's that described map unit is high with the required SNR that satisfies received signal among described a plurality of users signal redundancy is mapped in a plurality of bits of assigned high order modulation symbol, and the user's that the required SNR that satisfies received signal among described a plurality of users is low signal map is to the individual bit position of assigned high order modulation symbol;
Undertaken by described many Bit Allocation in Discrete module at described allocation units under the situation of bit distribution, the user's that described map unit is high with the required SNR that satisfies received signal among described a plurality of users signal redundancy is mapped in the high a plurality of bits of demodulation performance in the assigned high order modulation symbol, and the user's that the required SNR that satisfies received signal among described a plurality of users is low signal redundancy is mapped to the low a plurality of bits of demodulation performance in the assigned high order modulation symbol.
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| CN106411801A (en) | 2015-07-30 | 2017-02-15 | 中兴通讯股份有限公司 | Multi-user information transmission modulation method and apparatus, and multi-user information transmission demodulation method and apparatus |
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