Performance Simulation of MIMO Techniques in Ultra Mobile Broadband (UMB)Systems

摘要

Ultra mobile broadband is held up as the shining successor to evolution-data optimized the 4G answer for CDMA operators that set them down the path to true high-capacity networks. It also incorporates Multiple Input Multiple Output (MIMO) and Space Division Multiple Access (SDMA) advanced antenna techniques to provide even greater capacity, coverage, and quality in deployments with multiple antennas. Multiple Transmit and Receive Antennas can be used for the MIMO channel to increase the capacity- and the goal of MIMO is to measurably improve the spectral efficiency (bit/sec/Hz), the coverage area (cell radius) and the signal quality (bit-error rate or packet-error rate). Maximal Ratio Combining (MRC) is one of the well known linear combining techniques in which the spatial combiner weights are chosen so that the output signal to (thermal) noise ratio (SNR) is maximized. Alamouti proposes a transmit diversity scheme that offers similar diversity gains, using multiple antennas at the transmitter and only requires multiple antennas at the base station in comparison to multiple antennas for every mobile in a cellular communications system. This research paper provides in-depth knowledge of Performance Simulation of MIMO Techniques in Ultra Mobile Broadband (UMB) Systems, in which we have proposed Maximal Ratio Combining (MRC) and Alamouti Schemes in order to achieve higher data rates as well as enormous capacity to be used in UMB.