Performance of multi-band voice coding standards for generalized-fading wireless channels

A generic approach for estimating the bit-error-rate (BER) of a single and multi-branch coherent reception for an antipodal binary multi-band transmitted voice signals through an independent-fading channels are described. Recent voice coders are the candidate coders for producing good quality voice in the range from 2.4 to 16 kb/s. The issues of transmitting different bit rates of recent trends over a generalized-fading mobile radio channels are discussed. The performance results demonstrate the severe penalty in signal-to-noise ratio (SNR) that must be paid as a consequence of the fading characteristics of the received signal. The BER results are obtained without using channel coding or error-correcting codes.