FPGA Implementation of Sphere Detector for Spatial Multiplexing MIMO System

Multiple Input Output (MIMO (techniquesuse multiple antennas at both transmitter and receiver forincreasing the channel reliability enhancing spectralefficiency of wireless communication system.MIMO Spatial Multiplexing (SM) is a technology that can increase channelcapacity without additional spectral resources. The implementation MIMO detection techniques become difficult missionas computational complexity increases with number transmitting antenna constellation size. So designing recover transmitted signals from SpatialMultiplexing reduced highperformance challenging. In this survey, general model ofMIMO system presented in addition to multipleMIMO techniques. These are divided into different categories, such as linear detection, Non-linear tree-search detection. Detailed discussions on advantages disadvantages each algorithm introduced. Hardware Sphere Decoder (SD) using VHDL/FPGA also