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A vector multiprocessor for real-time multi-user detection in spread-spectrum communication

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1 Author(s)
Manjikian, N. ; Dept. of Electr. & Comput. Eng., Queen''s Univ., Kingston, Ont., Canada

Multi-user detection in spread-spectrum communications involves repeatedly solving a system of equations to decouple multiple-access interference among users communicating with a basestation. This paper proposes a vector multiprocessor to provide the necessary computing performance. Two vector processors with parallel vector pipelines that are optimized for vector multiply-add operations achieve sustained gigaflop-level performance with a 100 MHz internal clock. Performance analysis of vector assembly-language code on eight vector units indicates that matrix-vector multiplication for a 32×32 problem can be performed in less than 2 μs, and that matrix inversion can be performed in less than 200 μs

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Application-Specific Systems, Architectures, and Processors, 2000. Proceedings. IEEE International Conference on

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