International Journal of Computer Applications
Diversity methods offer the receiver with separately faded copies of the transmitted signal with the expectation that at least one of these replicas will be received properly. There are ranges of techniques available during which these faded copies can be recovered and used as part of preparations for better reception. Transmit diversity uses multiple transmit antennas to offer the receiver with multiple uncorrelated replicas of the transmitted signal. The advantage is that the difficulty of having multiple antennas is located on the transmitter, which can be common among many receivers for the downlink of a wireless system, even as still providing diversity benefits.