TY - GEN
T1 - A turbo rake receiver for space-time block coded frequency selective CDMA systems
AU - Jayaweera, Sudharman K.
AU - Poor, H. Vincent
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2002
Y1 - 2002
N2 - A turbo receiver that combines the concepts of RAKE combining, turbo detection and space-time block coding is proposed for multipath CDMA systems. The proposed system combines the decorrelating RAKE (DRAKE) receiver developed for frequency selective CDMA channels with the iterative soft interference cancellation and Minimum Mean Square Error (MMSE) filtering proposed for convolutionally coded CDMA, and extends these ideas to the case where the system also employs space-time block coding (STBC) in addition to the convolutional channel coding. A novelty of the new receiver is that the space-time decoding is performed along each resolvable multipath direction. Simulation results show that, while in some cases a non-iterative space-time coded system may have inferior performance compared to a system without space-time coding in a multipath channel, the proposed iterative scheme always significantly outperforms systems without spacetime coding even with only two iterations.
AB - A turbo receiver that combines the concepts of RAKE combining, turbo detection and space-time block coding is proposed for multipath CDMA systems. The proposed system combines the decorrelating RAKE (DRAKE) receiver developed for frequency selective CDMA channels with the iterative soft interference cancellation and Minimum Mean Square Error (MMSE) filtering proposed for convolutionally coded CDMA, and extends these ideas to the case where the system also employs space-time block coding (STBC) in addition to the convolutional channel coding. A novelty of the new receiver is that the space-time decoding is performed along each resolvable multipath direction. Simulation results show that, while in some cases a non-iterative space-time coded system may have inferior performance compared to a system without space-time coding in a multipath channel, the proposed iterative scheme always significantly outperforms systems without spacetime coding even with only two iterations.
UR - http://www.scopus.com/inward/record.url?scp=0012664978&partnerID=8YFLogxK
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U2 - 10.1109/SAM.2002.1191081
DO - 10.1109/SAM.2002.1191081
M3 - Conference contribution
AN - SCOPUS:0012664978
T3 - Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop
SP - 456
EP - 460
BT - 2002 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings, SAME 2002
PB - IEEE Computer Society
T2 - IEEE Sensor Array and Multichannel Signal Processing Workshop, SAME 2002
Y2 - 4 August 2002 through 6 August 2002
ER -