We analyze the outage probability (OP), ergodic capacity (EC), and average biterrorprobability (ABEP) of L-branch diversity systems using maximal-ratio-combining (MRC) over Multi-cluster-Fluctuating-Two-Ray (MFTR) f...
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We analyze the outage probability (OP), ergodic capacity (EC), and average biterrorprobability (ABEP) of L-branch diversity systems using maximal-ratio-combining (MRC) over Multi-cluster-Fluctuating-Two-Ray (MFTR) fading channels, a model well-suited for sub-terahertz bands. We derive exact OP, EC, and ABEP expressions. For this latter metric, we assume M-ary quadrature amplitude modulation (M-QAM), and we also perform its asymptotic analysis to obtain the coding gain and diversity order. Unlike previous works for simpler fading models, our expressions retain consistent complexity regardless of the number of MRC branches and depend on functions available in standard mathematical software. The results show that coding gain relies on fading distribution parameters, L, and M. Meanwhile, diversity order is determined by multiplying L with the number of multipath clusters in the MFTR model.
Scheme of a noncoherent selective receiver of ultrawideband chaotic radiopulses in a multipath channel with additive Gaussian noise is proposed and analyzed. Method is based on a convolution of chaotic pulses with a m...
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ISBN:
(纸本)9789663354125
Scheme of a noncoherent selective receiver of ultrawideband chaotic radiopulses in a multipath channel with additive Gaussian noise is proposed and analyzed. Method is based on a convolution of chaotic pulses with a mutually orthogonal signal set. It was shown that bit-error-probability versus signal-to-noise ratio of the proposed method in the multipath channel is practically the same as for the energy receiver in the AWGN channel with one path.
In this paper the performance of wireless optical links in terms of bit-error-probability is evaluated, aiming at the assessment of optical wireless network-on-chip systems based on all-dielectric antennas. In particu...
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ISBN:
(纸本)9781728184234
In this paper the performance of wireless optical links in terms of bit-error-probability is evaluated, aiming at the assessment of optical wireless network-on-chip systems based on all-dielectric antennas. In particular, a ray tracing technique is suitably exploited to account for the channel modeling of the multi-layer optical wireless communication links, whereas the dielectric antennas is designed through a parametric analysis by FDTD simulations.
In this paper, we study the performance of hybrid cognitive radio (CR) system in the presence of channel estimation error (CER) in terms of bit-error-probability (BEP) and outage probability. We assume simultaneous sw...
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ISBN:
(纸本)9781479935123
In this paper, we study the performance of hybrid cognitive radio (CR) system in the presence of channel estimation error (CER) in terms of bit-error-probability (BEP) and outage probability. We assume simultaneous switching between the underlay and overlay modes of CR where in, the secondary user (SU) probabilistically accesses the primary user's (PU) channel in both underlay and overlay modes to utilize the benefits of hybrid CR system. The PU uses two-layer 2/4-ASK constellation with unequal level of bit protection against the interference imposed by the SU's transmitter. The SU wishes to opportunistically use the PU's channel to transmit its own data while maintaining the performance of the PU's layer with the worst level of protection at a desired value. We derive the SU's maximum allowable transmit power in the overlay mode to guarantee the PU reliable communication then, we discuss about the optimum value of the hybrid switching rate that minimizes the outage probability of the SU along with, deriving the exact BEP and outage probability expressions for the secondary system as well as that of the first and the second layers of the PU system.
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