Research on Multiuser Detection for Space-Time Coded MC-CDMA Mobie Communication Systems
碩士 === 大葉大學 === 電信工程學系碩士班 === 92 === In this paper, we investigate the performance of multiuser detection in space-time coded multi-carrier code-division multiple-access (STC-MC-CDMA) mobile communication systems over frequency selective fading channels. The Alamouti’s space-time coding scheme that...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2004
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/29091996981867363122 |
| Summary: | 碩士 === 大葉大學 === 電信工程學系碩士班 === 92 === In this paper, we investigate the performance of multiuser detection in space-time coded multi-carrier code-division multiple-access (STC-MC-CDMA) mobile communication systems over frequency selective fading channels. The Alamouti’s space-time coding scheme that involves two transmit antennas is performed to investigate the transmit diversity for MC-CDMA systems. Using two transmit antennas and two receive antennas the scheme provides temporal diversity and spatial diversity.
Simulation results show that the performance of minimum mean square error (MMSE) detectors is compared with orthogonality restoring combining (ORC), equal gain combining (EGC) and controlled equalization combining (CEC) detector is investigated. The performance of MMSE detector is much better than ORC, EGC, and CEC detectors with two antennas for both transmitter and receiver for STC-MC-CDMA systems. It is noted that a 10dB-gain can be achieved for the STC-MC-CDMA systems with two receive antennas comparing with the conventional single-transmit-antenna MC-CDMA systems.
|
|---|