Enhanced dual strategy based VLSI architecture for computing pseudo inverse of channel matrix in a MIMO wireless system

Multiple input multiple output (MIMO) wireless technology involves highly complex signal processing which is directly related to increased power and area consumption in VLSI architecture. This paper proposes an enhanced dual strategy based VLSI architecture developed for computing the pseudo inverse of augmented channel matrix used in MIMO systems. The architecture concurrently addresses algorithmic optimization of number of multipliers while at the same time allowing for intelligent selective clock gating to disable the clock to those portions of the architecture that remain inactive during period of computation. Results indicate overall 36% power and 31% area reduction compared to previous architecture without degrading the BER performance.