SS-OFDM-F/TA system packet size and structure for high mobility cellular environments

The SS-OFDM-F/TA system takes advantage of multi-user diversity and adaptively allocates radio resources in two dimensions. Effective allocation of radio resources to vehicular user requires relatively small transmission sizes in comparison to those suitable for low-mobility environments. In this paper, appropriate packet sizes and structures for the SS-OFDM-F/TA system are determined in highly frequency-selective channels, for high mobility (e.g. vehicular) users. Three sets of transmission formats corresponding to various packet sizes, the allocation of sets of disjoint sub-bands and division packets into sub-packets are considered. The average data throughput per sector and packet delay performance for each system configuration are determined in vehicular environments with slow and fast sector selection.