A Low-Complexity Multistage Receiver for Multiuser Detection of CDMA with Turbo and Space-time Block Coding
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چکیده
The combination of Turbo codes and space-time block codes is studied for use in CDMA systems. Each user's data are rst encoded by a Turbo code. The Turbo coded data are next sent to a space-time block encoder employing a BPSK constellation. The space-time encoder output symbols are transmitted through the fading channel using multiple antennas. A multistage receiver is proposed using non-linear MMSE estimation and a parallel interference cancellation scheme. Simulations show that with reasonable levels of multiple access interference (0:3), near single user performance is achieved.
منابع مشابه
Multistage Multiuser Detection for Cdma with Space-time Coding
The combination of Turbo codes and space-time block codes is studied for use in CDMA systems. Each user's data are rst encoded by a Turbo code. The Turbo coded data are next sent to a space-time block encoder which employs a BPSK constellation. The space-time en-coder output symbols are transmitted through the fading channel using multiple antennas. A multistage receiver is proposed using non-l...
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تاریخ انتشار 2007