BER Assessment of MIMO-OFDM Using Spatial Diversity With OSTBC4

摘要

MIMO-OFDM a new wireless communication system can yield significantly increased data rates and improved link reliability without additional bandwidth. Increased capacity is achieved by introducing additional spatial channels that are exploited by using space-time coding. Orthogonal frequency-division multiplexing is a method of digital modulation in which a signal is split into several narrow b and channels at different frequencies. The technology was first implemented in the 1960s and 1970s during research into minimizing interference among channels near each other in frequency. In this paper, a simulation model of MIMO-OFDM system based on OSTBC is built. BER performance of the system with different number of transceiver antennas like 4X1, 4X2, 4X3, 4X4 with OFDM are analyzed and simulated under different channels considering different modulation modes such as PSK and QAM. The spatial diversity is increased by employing MIMO-OFDM with OSTBC.