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In this paper, we present accurate performance analysis of amplify-and-forward (AF) relaying systems by introducing the effect of multipath flat Rayleigh fading channels on the additive white Gaussian noise (AWGN). The second hop channel is seen by the transmitted signal as flat fading when the signal bandwidth is less than the coherence bandwidth....
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Context 1
... an exponential PDP (with σ = 1) and L = 10. 3) one path channel (when σ → 0) and L = 1 (literature approximation). In Figs. 1-2, Monte Carlo simulation (10 6 realizations) is used to validate the new analytical expressions. It is seen that the simulation and proposed analytical expressions provide a perfect match which corroborate the exactness of the pro- posed analytical expressions. Figs. 1-2 reveals that, previously reported performance analysis of AF ...
Context 2
... 10. 3) one path channel (when σ → 0) and L = 1 (literature approximation). In Figs. 1-2, Monte Carlo simulation (10 6 realizations) is used to validate the new analytical expressions. It is seen that the simulation and proposed analytical expressions provide a perfect match which corroborate the exactness of the pro- posed analytical expressions. Figs. 1-2 reveals that, previously reported performance analysis of AF relaying systems over flat fading channels is questionable since they underestimated the AWGN noise effect on the performance analysis 2 . The performance degradation is more apparent on the average BER analysis than the ergodic capacity analysis, and at higher SNR values. ...
Context 3
... that, previously reported performance analysis of AF relaying systems over flat fading channels is questionable since they underestimated the AWGN noise effect on the performance analysis 2 . The performance degradation is more apparent on the average BER analysis than the ergodic capacity analysis, and at higher SNR values. For instance, in Fig. 1, for a target of 10 −3 average BER, we need SNR = 30 dBs in the case of one path channel of L = 1 (as previously approximated). However, when the noise selectivity is taken into account, for a multipath flat fading channel with a uniform PDP of L = 10, we need SNR = 36 dBs instead of 30 dBs when L = 1 (the second hop channel is ...
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