Reverse-link analysis and performance evaluation of H.263 video transmission for cellular DS/CDMA systems in frequency-selective lognormal-Nakagami fading

We present the analysis and performance evaluation of H.263 video transmission over the reverse link of a cellular multicode IS-95B system. Our study hence considers CDMA as the channel sharing technique, instead of TDMA which has been used in most previous studies. The frequency-selective channel exhibits Nakagami short-term fading and lognormal shadowing; such a general model allows us to observe the effect of the channel parameters on the video performance. We consider the multiple-cell performance for a more realistic assessment. The numerical results are presented in terms of peak signal-to-noise ratio (PSNR). They indicate that, for each set of channel and receiver parameters, there is a threshold effect, i.e. a maximal number of users can be supported before the video communication breaks down