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In this paper, a Multi-band Space-Frequency Transmit Selection (Multi-band SFTS) scheme is proposed for MB-OFDM UWB systems to explore both transmit and receive diversity effectively through multiple transmit and receive antennas without violating the FCC Power Spectral Density (PSD) constraint for UWB. This proposed technique is able to achieve diversity gain in both spatial and frequency domain...
The very short transmission range for high data rate Ultra-Wideband (UWB) communication systems is an important factor that limits its potential applications. In the case when using Maximum Ratio Combiner (MRC) at receiver is expensive or impractical, gaining transmit diversity becomes critical. Transmitter beamforming without lowering its transmission power is no longer applicable to UWB due to the...
In this paper, receive antenna selection technique is discussed for Ultra Wideband (UWB) systems with linear Minimum Mean Square Error (MMSE) equalization in the presence of Inter Symbol Interference (ISI) and Narrow Band Interference (NBI). Given UWB multipath indoor channel with shadowing effects proposed in IEEE 802.15.3a channel model recommendation, Least Squares (LS) based receive antenna selection...
The shadowing in ultra wideband (UWB) channels may degrade the system performance significantly. Although UWB multipath channels exhibit high resolution in space and time. The large scale shadow fading were moderately correlated based on UWB indoor channel measurement. In this paper, a new modelling method for correlated shadowing with log-normal distribution in UWB multiple-input multiple-output...
In this paper, a novel receive antenna subset selection technique is proposed for multiple input multiple output spatial multiplexing (MIMO-SM) systems with linear minimum mean square error (MMSE) receivers in the presence of unknown co-channel interference. This antenna selection technique is directly implemented based on training sample sequence by utilizing backward greedy algorithm (BGA) under...
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