Spatial Multiplexing Turbo Receiver with Reduced Complexity

This paper proposes a multi-antenna spatial multiplexing receiver exhibiting very good performances in the presence of fading and low signal-to-noise ratio. These result from the use of a soft-output sphere decoder with reduced complexity and a robust turbo channel decoder affected by log-likelihood ratio quantization and saturation. Fixed-point implementation is targeted, taking in account the receiver throughput and latency.