Rajagopal, SridharBhashyam, SrikrishnaCavallaro, Joseph R.Aazhang, Behnaam2007-10-312007-10-312002-07-202001-09-18S. Rajagopal, S. Bhashyam, J. R. Cavallaro and B. Aazhang, "Real-Time Algorithms and Architectures for Multiuser Channel Estimation and Detection in Wireless Base-Station Receivers," <i>IEEE Transactions on Wireless Communications,</i> vol. 1, no. 3, 2002.https://hdl.handle.net/1911/20216Journal PaperThis paper presents alogrithms and architecture designs that can meet real-time requirements of multiuser channel estimation and detection in future wireless base-station receivers. Sophisticated algorithms proposed to implement multiuser channel estimation and detection make their real-time implementation difficult on current Digital Signal Processor (DSP)-based receivers. A maximum-likelihood based multiuser channel estimation scheme requiring matrix inversions is redesigned from an implementation perspective for a reduce complexity, iterative scheme with a simple fixed-point VLSI architecture. A reduced-complexity, bit-streaming multiuser detection algorithm that avoids the need for multishot detection is also developed for a simple, pipelined VLSI architecutre. Thus, we show that real-time solutions can be achieved for third generation wireless systems by (1) designing the alogrithms from a fixed-point implementation perspective, without significant loss in error rate performance, (2) task partitioning and (3) designing bit-streaming fixed-point VLSI architectures that explore pipelining, parallelism and bit-level computations to achieve real-time with minumum area overhead.engReal-time implementationmultiuser channel estimationmultiuser detectionDSPVLSIW-CDMAJournal articleReal-time implementationmultiuser channel estimationmultiuser detectionDSPVLSIW-CDMAhttp://dx.doi.org/10.1109/TWC.2002.800545