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A low complexity and low power SoC design architecture for adaptive MAI suppression in CDMA systems

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Title: A low complexity and low power SoC design architecture for adaptive MAI suppression in CDMA systems
Author: Guo, Yuanbin; Cavallaro, Joseph R.
Type: Journal Paper
Keywords: Interference cancellation; low power; CDMA; adaptive; SoC; VLSI.
Citation: Y. Guo and J. R. Cavallaro, "A low complexity and low power SoC design architecture for adaptive MAI suppression in CDMA systems," Journal of VLSI Signal Processing, 2005.
Abstract: In this paper, we propose a reduced complexity and power efficient System-on-Chip (SoC) architecture for adaptive interference suppression in CDMA systems. The adaptive Parallel-Residue-Compensation architecture leads to significant performance gain over the conventional interference cancellation algorithms. The multi-code commonality is explored to avoid the direct Interference Cancellation (IC), which reduces the IC complexity from O(K^2N) to O(KN). The physical meaning of the complete versus weighted IC is applied to clip the weights above a certain threshold so as to reduce the VLSI circuit activity rate. Novel scalable SoC architectures based on simple combinational logic are proposed to eliminate dedicated multipliers with at least 10X saving in hardware resource. A Catapult C High Level Synthesis methodology is apply to explore the VLSI design space extensively and achieve at least 4£ speedup. Multi-stage Convergence-Masking-Vector combined with clock gating is proposed to reduce the VLSI dynamic power consumption by up to 90%.
Date Published: 2005-05-01

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  • ECE Publications [1082 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
  • CMC Publications [275 items]
    Publications by Rice Faculty and graduate students in multimedia communications