Space time MSINR-SRAKE receiver with finger assignment strategies in UWB multipath channels

This paper proposes a space time selective RAKE (SRAKE) receiver by maximizing signal to interference-plus-noise ratio (MSINR) for ultra wideband (UWB) communications in the presence of narrowband interference (NBI) and multiple access interference. For effectively extracting the UWB signal of interest with low complexity, two finger assignment strategies (FASs), the energy-based FAS and the constrained energy-based FAS, are considered by the proposed space time MSINR-SRAKE receiver. By analysis and simulation, we show that the proposed space time MSINR-SRAKE receiver can provide larger system capacity and have better immunity to strong NBI than the existing time-only SRAKE receivers and space time SRAKE receivers.