A PROGRAMMABLE SIMD-BASED MULTI-STANDARD RAKE RECEIVER ARCHITECTURE (ThuPmOR4)

Author(s) : Anders Nilsson (Linkoping University, Sweden) Eric Tell (Linkoping University, Sweden) Dake Liu (Linkoping University, Sweden)

Abstract : Programmability with its associated flexibility will be increasingly important in future multi-standard radio systems. We are presenting a fully programmable and flexible DSP platform capable of efficiently performing channel estimation and MRC-based channel equalization for several CDMA based wireless transmission systems in software. Our processor is based on a DSP core with SIMD-computing clusters. We have mapped Rake receiver kernel-functions supporting several 3G standards to this micro-architecture and benchmarking shows that with the proposed instruction set architecture, our architecture can support channel estimation, equalization and decoding of: WCDMA FDD/TDD-modes and HSDPA at clock rate not exceeding 76 MHz during soft handover conditions.

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