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In this paper, exact performance analyses of the noncoherent ultra-wideband differential transmitted reference systems are evaluated in the correlated Nakagami-m fading channels via applying the characteristic function (CF) method, where the correlated channel model is derived from the bivariate Nakagami-m distribution. Moreover, the independent Nakagami-m fading channel is considered as a special...
The expectation-maximization-based (EM-based) receiver provides a decent solution for conquering the delay problem of estimating the channel side information (CSI) via detecting data sequence iteratively at the expense of increasing the processing time. To accelerate the processing time, an alpha-expectation-conditional-maximization (ECM) design for direct-sequence (DS) code-division multiple access...
Recently, the concept of the cooperative communications has been applied extensively for the ultra-wideband (UWB) system. In this paper, the cooperative scheme of the noncoherent UWB impulse radio system with block-coded modulation (BCM) having a codeword matching and signal aggregation (CMSA) detection is discussed under different fading environments, which has not been studied yet. To enlarge the...
To overcome the limitation of the transmit power spectral density, the cooperative communication in the ultra-wideband (UWB) differential transmitted reference system is studied. The amplify-and-forward is used as a relay protocol to re-transmit signals from multi-source terminals to one destination terminal. An adaptive amplification factor based on the channel information between relay and destination...
Under the impact of multiuser interference, the exact bit error probability of the time-hopping ultra-wideband differential transmitted reference system over the Nakagami-m fading channels is evaluated via applying the characteristic function (CF) method. The CF method does not introduce any unrealistic assumptions, therefore our numerical results from the CF method demonstrate a better match in comparison...
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