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The performance of fast frequency hopping OFDM (FFH-OFDM) is evaluated under UWB channels with several types of receivers. It is shown that FFH-OFDM has a significant improvement over a conventional OFDM system. The receiver algorithms for the FFH-OFDM considered in this paper are zero-forcing (ZF), minimum mean square error (MMSE), QR- MMSE and sorted QR-MMSE (SQR-MMSE). Soft-output metric computation...
Multi-band ultra-wideband (MB-UWB) divides the available spectrum into multiple subbands, in which certain bands may be turned off to eliminate possible interference and coexistence problems with other wireless services using the same spectrum. Another possibility arising from MB-UWB is the assignment of different time-frequency subband hopping patterns to support simultaneously operating piconets...
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