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| MMSE-Minimizing Signature Optimization for Multiaccess Interference Avoidance |
| Yuan Zhi-gang; Shen Yue-hong |
| Institute of Communication Engineering, Wireless Communication Lab, Nanjing 210007, China |
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Abstract By employing MMSE (Minimal Mean Squared Error) criteria, the multi-user transceivers in this paper are optimized by adjusting their signatures and demodulations according to interferences around, which can reduce at most the co-interferences from users and minimize the lower bound of MMSE. During the design process, the striking improvements in both convergence and low-complexity are achieved by using matrix-blocking computation theory. And in practice, the designed signature assemble perform rather well than that by capacity-maximizing signature design method (Rose etc.2002) under the additive white Gaussian noise channel. Finally, some simulation results are also provided as proof.
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Received: 19 November 2004
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2006, Vol. 28 
