Title :
Performance of MMSE multiuser detection for downlink CDMA
Author :
Wang, Yi ; Wu, Jun ; Du, Zhimin ; Wu, Weiling
Author_Institution :
Beijing Univ. of Posts & Telecommun., China
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
Keywords :
cellular radio; code division multiple access; correlation methods; least mean squares methods; matrix algebra; multipath channels; multiuser channels; radio receivers; radiofrequency interference; signal detection; spread spectrum communication; MMSE multiuser detection; combined spreading waveforms; cross-correlation matrix; downlink CDMA; minimum mean-square error; near-far resistance; performance; signal-to-noise ratio; synchronous multipath channels; AWGN; Demodulation; Detectors; Downlink; Multiaccess communication; Multipath channels; Multiuser detection; Performance analysis; Signal analysis; Signal to noise ratio;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853632
