Abstract
Performance analysis of minimum mean-square error (MMSE) multiuser detection over synchronous multipath channels is considered in this paper. Assuming the channel parameters are known, analysis shows that both the signal-to-noise ratio (SIR) at the output of the MMSE detector and near-far resistance are related to the cross-correlation matrix of combined spreading waveforms. Computation results demonstrate that the MMSE detector can achieve good performance under severe conditions, including a large number of users and large channel length.
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