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In order to satisfy the requirement for higher data rates, the UWB spatial multiplexing system that combines MB-OFDM UWB and V-BLAST scheme is presented in this paper. And then, various detection algorithms are studied and simulated in this system for the sake of a better performance. Simulation results show that MMSE-BLAST is an appropriate one among the conventional suboptimal algorithms, and the...
In order to increase the peak transmission data rate of Zigbee and expand its application scenario, IEEE 802.15.4a standard has been proposed in 2007, and ultra-wideband (UWB) technique has been selected as one of its physical layer standard. The performance of wireless sensor networks (WSN) will be affected by the pulse waveform transmitted in the channel, hence, in this paper, the Chinese regulation...
In order to expand the application of wireless sensor networks (WSN), ultra-wideband (UWB) technique is approved as one of the physical layer of IEEE 802.15.4a standard. Theoretical analysis shows that the performance of UWB system is affected by the transmitted pulse waveform, and pulses with high power efficiency can improve the signal to noise ratio (SNR) significantly. Hence, pulse with high power...
Recently approved IEEE 802.15.4a standard defines an ultra-wideband (UWB) based physical layer technique, and performance analysis of UWB systems shows that the pulse waveform will affect the received SINR when multipath interference, multiple access interference and additive white Gaussian noise are considered. In order to obtain an optimal pulse waveform in UWB based wireless sensor networks, the...
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