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In this paper, a combined pulse position modulation (PPM), differential BPSK and multi-pulse modulation (MPM) have been proposed for the multiple access system in order to increase the total data rate and improve the error performance by using the same number of pulses. With these schemes, the modulated pulse can be used for transmitted more than one bit data depending on the level of MPM and PPM...
Transmit reference ultra wideband (TR-UWB) communication system is gaining increased popularity as a prospective transmission scheme for short-range high data rate indoor wireless communication because of its simplification of synchronization and channel estimation that are known to be difficult problems in UWB communication systems. However, TR-UWB has problem that the data rate will be degraded...
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