ABSTRACT
The main target of future cellular network designers is to improve the broadband wireless access of these networks by achieving high-rate, high-reliability packet-based transmission over the wireless channel, the bottleneck against this achievement. Three of the most important wireless channel impairments are:
3.1 Introduction .............................................................. 85 3.2 OFDMA: Prospective Multiple-Access
Scheme in Beyond 3G Cellular Networks ........... 87 3.3 Adaptive Physical Layer Scheduling .....................88
