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Methods and systems for demodulating a multiuser signal using channel decoders for a multiple-access communication system
Methods and systems for demodulating a multiuser signal using channel decoders for a multiple-access communication system
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机译:用于多址通信系统的使用信道解码器解调多用户信号的方法和系统
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摘要
Methods and systems for demodulating a multiuser signal using channel decoders for a multiple-access communication system are disclosed. According to one method, a signal containing information for a plurality of users in a multiple-access communication system employing spreading sequences is received. The received signal is despread using a signature sequence for each user to produce individual user signals having multiple-access interference (MAI). Channel estimates associated with each of the individual user received signals are determined. Each of the individual user signals are decoded using a channel decoder with a log-likelihood ratio (LLR) that accounts for the time-varying variance of the MAI in the individual user signals based on a model of the MAI including the channel estimates of the received signals of other users.
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