Bit Error Rate Performance of BPSK and QPSK Modulation for Space Time Block Coding Diversity Technique

Sourabh Singla

Abstract


Wireless communication systems are designed to send messages or information from a source that generates the messages to one or more destinations. In a wireless communication system, channel consists of multiple signal paths from the transmitter to the receiver. This multiplicity of paths leads to a phenomenon known as multi-path fading. To meet the demand for higher data rates and to combat the effect of fading, an emerging technology called multiple input and multiple output (MIMO) has appeared. In MIMO systems, multiple antennas at both transmitter & receiver and diversity techniques can be used to reduce multi-path fading and interference. Diversity can be achieved by providing a copy of the transmitted signal over frequency, time and space. This Paper presents investigations on BER Performance of QPSK modulation scheme for different antennas under Rayleigh fading environment

Keywords


Alamouti, Diversity, Multiple Input and Multiple Output, Space Time Block Coding.

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References


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