TECHNOLOGY ANALYSING THE BER OF VARIOUS MODULATION SCHEMES
Deepak Dua, Neha Mehta · 2015
An interesting approach for implementing diversity is space–time trellis coding, where symbols are encoded according to the antennas through which they are simultaneously transmitted and are decoded using a maximum likelihood decoder. This scheme is very effective, as it combines the benefits of forward error correction (FEC) coding and diversity transmission to provide considerable performance gains. The cost for this scheme is additional processing, which increases exponentially as a function of bandwidth efficiency (bits/s/Hz) and the required diversity order. Therefore, for some applications it may not be practical or cost-effective.