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In many wireless communication systems, the phase of the received signal can not be tracked accurately due to the random time-varying nature of the channel. Apart from the degradations caused by multipath fading and additive white Gaussian noise (AWGN), the imperfect phase estimation results in additional bit errors at receiver. In this paper, a simple semi-analytical method is presented for evaluating...
An optimum maximum-likelihood (ML) receiver structure for a fast frequency-hopped M-ary frequency-shift keying system over frequency-selective Rician-fading channels against partial-band-noise jamming and additive white Gaussian noise is proposed. In addition, we propose two suboptimum ML receivers and derive their corresponding analytical bit-error rate expressions.
In this paper, we evaluate the performance of a suboptimum maximum-likelihood receiver for FFH/BFSK systems with a worst case multi-tone jamming and additive white Gaussian noise over frequency selective Rician fading channel. As we know the computation of nonlinear modified Bessel function is required to implement the optimum ML receiver. According to this fact, one of the existent approximations...
We present bit error rate (BER) expressions of pi/4 shifted differential quadrature phase shift keying (pi/4-DQPSK) with single and multi-channel reception over generalized fading channels in presence of additive white Gaussian noise (AWGN). Slow flat small scale statistical fading models, namely Rayleigh, Rician, Nakagami-m and Hoyt fading has been assumed. Moreover, to improve the link quality receiver...
Using dasiabetter thanpsila Nyquist pulse the average bit error rate performance of a time-hopping pulse position modulation and TH-binary phase shift keying ultra-wideband systems has been evaluated in the presence of multiple access interference and additive white Gaussian noise for different system and pulse parameters such as repetition code length, roll-off factor and the symbol repetition rate...
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