Maximising Spectral Efficiency in 4th Generation OFDM/TDMA TDD Hybrid Cellular Mobile/Ad-Hoc Wireless Communications

P E Omiyi, H Haas

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A novel strategy is presented to maximise spectral-efficiency in 4/sup th/ generation OFDM/TDMA TDD wireless communications with 100% frequency re-use. This strategy involves permitting peer-to- peer communications at the edges of cells within the cellular mobile infrastructure and employing a novel medium-access- control protocol, denoted as channel-sensing TDMA TDD, to minimise intercellular interference and efficiently co-ordinate ad-hoc communication jointly. Channel-sensing TDMA TDD employs a modified busy-tone broadcast/channel-sensing mechanism to avoid and mitigate high interference scenarios. Results show significant improvements in system capacity and spectral- efficiency from the application of this novel approach compared to the state-of-the-art.
Original languageUndefined/Unknown
Title of host publicationProc. of the Vehicular Technology Conference (VTC)
Number of pages5
Publication statusPublished - 1 May 2004

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