R.M.A.P. Rajatheva

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This paper demonstrates performance comparison of ultra wideband (UWB) systems in the stochastic tapped delay line (STDL) and IEEE 802.15.3a models of the UWB channel with RAKE receiver in presence of multiple user interference (MUI). System models are based on direct sequence code division multiple access (DS-CDMA) principle with bi-phase modulation (BPM).(More)
The research on distributed video coding (DVC) has been increasingly popular in recent times due to its promising features. DVC primarily has a modified complexity balance between the encoder and decoder, in contrast to conventional video codecs. In video communications over wireless channels, the noise and multipath fading effects have a significant effect(More)
Space time coded OFDM systems have been recently proposed as a promising approach with transmit diversity and higher coding gain for transmission over frequency selective fading channels. This paper considers the channel estimation techniques for space time coded OFDM systems using space time block coded (STBC) pilot sequences. The performance of least(More)
In high data rate indoor ultra wideband (UWB) communication systems, the selection of the appropriate detection method in the receiver is always an important problem. This paper compares the performances of two different detection methods, hard decision detection (HDD) and soft decision detection (SDD), for three different types of indoor UWB systems named(More)
Waterways play a very important role in the transportation of any riverine country like Bangladesh. A safe and well-organized riverine transportation system can commence some significant impact of the economy of the country. In virtual cellular architecture more than one base station with antennas of different polarizations are placed under one control base(More)
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