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A MODIFIED UWB PRAKERECEIVER USING MULTI- COMPARATORS | ||
| AL-TAQANI | ||
| Article 1, Volume 25, Issue 1, 2012, Pages 0-0 | ||
| Author | ||
| Nadhir Ibrahim Abdulkhaleq | ||
| Abstract | ||
| Ultra-wideband (UWB) communication systems occupy huge bandwidths with very low power spectral densities. This feature makes the UWB channels highly rich in resolvable multipath. To exploit the temporal diversity, the receiver is commonly implemented through a Rake. The aim is to capture enough signal energy to maintain an acceptable output Signal-to-Noise Ratio (SNR) .In this paper, the performance of a modifiedPartial rake (PRake) receiver for an(UWB) communication systems is studied . The modification is based on adding a common single finger whose output is fed to multi-comparators distributed along the conventional PRakefingers. ABinary Phase Shift Keying – Time HoppingUltra-wideband (BPSK/TH/UWB) signal is used , in multi user environment ,this study is done on the Wireless Personal Area Network (WPAN) IEEE802.15.3a, CM3,(which is prepared in Matlab program using m-file code). The Simulationresults based on a Matlab code programs show the effect of modification in terms of Bit Error Rate (BER) enhancement. The results show improvements in the BER in both single user and multiuser situations | ||
| Keywords | ||
| UWB; PRake; WPAN | ||
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