A Fixed-Complexity MIMO Detector Based on the Complex Sphere Decoder

Luis G. Barbero, John S. Thompson
2006 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications  
A new detection algorithm for uncoded multiple input-multiple output (MIMO) systems based on the complex version of the sphere decoder (SD) is presented in this paper. The algorithm performs a fixed number of operations to detect the symbols, independent of the noise level. The algorithm achieves this by combining a novel channel matrix preprocessing with a search through a small subset of the complete receive constellation. Simulation results show it has only a very small bit error ratio (BER)
more » ... degradation compared to the original SD while being suited for a fully-pipelined hardware implementation due to its fixed complexity.
doi:10.1109/spawc.2006.346388 fatcat:6e7yufm4p5dpxpw2qx6drw3w6e