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This letter considers and recommends OFDM with adaptive subcarrier modulation as a suitable candidate for wireless UWB communication in computer chassis. A rigorous measurement campaign studies the guaranteed spectral efficiency. It concludes that enhancement of the existing WiMedia OFDM systems with a bandwidth of 528 MHz in order to support adaptive OFDM would enable data-rates above 1 Gbps over short ranges, i.e. the spectral efficiency would be doubled. Moreover, the guaranteed spectral efficiency is shown to increase with bandwidth, i.e. the guaranteed data-rate increases better than linearly with bandwidth.
Sipal, V. et al. (2013) Adaptive OFDM for Wireless Interconnect in Confined Enclosures, Wireless Communications Letters, IEEE , vol.2, no.5, pp.507-510, 2013 doi:10.1109/WCL.2013.061913.130380