BER and outage probability performance of /4 DQPSK for Rice–lognormal channels

Tjhung, Tjeng Thiang; Tan, Soon Huat; Chai, Chin Choy

doi:10.1049/el:19960335

Cited by 2 publications

(2 citation statements)

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“…where m X is the Nakagami shape factor, w X is the local mean, σ X is the shadow standard deviation, and X is the area mean of X [10]. The composite pdf for multiple log-normal Rayleigh distributed INRs conditioned on the number of interferers N I is approximated by the log-normal distribution…”

Section: Per-hop Statistical Distributionmentioning

confidence: 99%

“…Since both SNR and INR are proportional to the squared envelope of the received signal, the composite pdf for the log‐normal Nakagami‐ m distributed SNR is given by where m X is the Nakagami shape factor, w X is the local mean, σ X is the shadow standard deviation, and Ω X is the area mean of X 10. The composite pdf for multiple log‐normal Rayleigh distributed INRs conditioned on the number of interferers N I is approximated by the log‐normal distribution where σ Y is the standard deviation and Ω Y is the area mean of Y as described in Reference 11.…”

Section: Co‐channel Interference Outage Probability Of Cooperativementioning

confidence: 99%

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Outage probability for cooperative diversity with selective combining in cellular networks

Yu¹,

Stuber²

2010

Wireless Communications

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This paper analyzes the outage probability for amplify-and-forward (AF) and decode-and-forward (DF) cooperative diversity systems with selective combining, for the case of a log-normal Nakagami faded desired signal and lognormal Rayleigh faded co-channel interferers. The outage probability is compared to that of a dual-receive antenna system also with selective combining. The results of this paper show that the proposed cooperative diversity systems can result in a lower outage probability than the corresponding dual-receive antenna system, but only when the relay is located in a particular region of the cell with respect to the destination mobile station location. Moreover, this paper shows that the AF cooperative diversity system is more robust than the DF cooperative diversity system for the composite channel condition and multiple interferers.which require a regenerating process. However, DF relays are nevertheless attractive, because the required signal processing can be performed with existing digital signal processing (DSP) blocks, while AF relays require expensive analog components and/or new hardware structures.In general, the performance of cooperative diversity schemes depends on the number of relays, the placement of relays, and the allocation of power. In addition, it is well known that cellular networks are interference limited rather than noise limited [1]. Hence, the cooperative diversity schemes can be vulnerable to co-channel interference (CCI), because the relays may all use the OUTAGE PROBABILITY FOR COOPERATIVE DIVERSITY 1565 × λth 0 exp{− (t 1 , t 2 )z}z mX−1 dzdt 1 dt 2 OUTAGE PROBABILITY FOR COOPERATIVE DIVERSITY 1567 Figure 4. Comparisons of the outage probability versus cochannel reuse factor on a shadowed Nakagami/shadowed Rayleigh channel, where ζ = 1 and Y = 3 dB.

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Section: Per-hop Statistical Distributionmentioning

confidence: 99%