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| A Low Complexity Scheme for Space-Time Multi-user Iterative Detection |
| Du Na;Xu Da-zhuan |
| College of Information Science & Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract In multiuser space-time coding system the research already made is almost focused on STTC and STBC scheme. For this reason, a multiuser space-time coding system combined with Turbo-BLAST scheme is proposed. The conventional iterative receiver with Symbol-Level Cancellation (SLC) and detection still has a high computation complexity, so a low complexity iterative receiver scheme with Bit-Level Cancellation (BLC) and detection is proposed which can performs bit-level cancellation by decomposing of an M-QAM constellation into a linear combination of binary constellations. Theoretic analysis and simulation results show that the proposed scheme has a low complexity with no performance degradation compared with conventional iterative receiver, while the high spectral efficiency of the system from BLAST is retained.
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Received: 11 September 2007
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2009, Vol. 31 
