Resource allocation method for channel condition optimization in NOMA of low-density code
A technology of resource allocation and channel status, applied in the direction of transmission path separation device, wireless communication, digital transmission system, etc., can solve the problems of mapping scheme design, maximum system and capacity target are not optimal, etc., to improve performance and improve and rate, and the effect of reducing the block error rate
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[0041] figure 1In an uplink low-density code NOMA communication system, the number of users is N=6, and the number of subcarriers is M=4. The base station schedules 6 users to share data on 4 subcarriers. The 6 The users consist of 2 cell edge users, 2 cell middle users, and 2 cell center users. The base station allocates subcarriers to each user for data transmission according to the channel conditions of the six users. During the allocation process, it is necessary to consider that the number of users carried by the same subcarrier cannot exceed three to prevent excessive decoding complexity.
[0042] figure 2 The resource allocation method proposed by the present invention is simulated and compared with the random selection regular resource allocation method not optimized by this method. In the simulation, the number of user selections is N=6, and the number of subcarriers is M=4.
[0043] The following describes how to apply the present invention and how to improve the ...
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