Outage probability of cellular radio systems usingmaximal ratio combining in Rayleigh fading channel with multiple interferers

Aalo, Valentine A.; Chayawan, C.

doi:10.1049/el:20000910

Cited by 57 publications

(40 citation statements)

References 4 publications

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“…In this section, the outage probability and BEP are derived for each type of receiver by modifying the results of [9] and [10]. Although the synchronous assumption is not valid in commercial CDMA systems, a synchronous reverse link is assumed in the performance analysis because it allows a complete comparative analysis of the diversity techniques.…”

Section: Performance Analysismentioning

confidence: 99%

“…Then, the output signal-to-interference-plus-noise ratio of the MRC system (SINR_o) is given by (2) where the superscript denotes complex conjugate transpose, and , , and . The SINR_o in (2) has a similar form to that of [9] and [10]. From the results of [9] and [10], the probability density function (pdf) of the SINR_o can be easily obtained as (3) where and are the pdfs of and , respectively, and are given by…”

Section: A Conventional -Branch Diversity Receivermentioning

confidence: 99%

“…The SINR_o in (2) has a similar form to that of [9] and [10]. From the results of [9] and [10], the probability density function (pdf) of the SINR_o can be easily obtained as (3) where and are the pdfs of and , respectively, and are given by…”

Section: A Conventional -Branch Diversity Receivermentioning

confidence: 99%

“…The MF output for a user 0 can be divided into two parts, which are the resolved MF outputs for the signals from normal and delay branches, respectively, and given by (8) where and are -dimensional vectors, and can, respectively, be given by (9) (10) where each element of represents the MF output corresponding to normal and delay diversity branches, respectively. In the equations, the denotes the intentional delay, denotes a sampling time, and denotes the floor function.…”

Section: B Proposed -Branch Diversity Receivermentioning

confidence: 99%

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A New Base Station Receiver for Increasing Diversity Order in a CDMA Cellular System

Choi¹,

Kim

et al. 2004

IEEE Trans. Commun.

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Abstract-A new base station receiver is proposed and analyzed for a code-division multiple-access (CDMA) cellular system. The proposed receiver can achieve remarkable diversity gain by increasing diversity order with reasonable cost and complexity. From the numerical results, it is confirmed that the proposed receiver structure can be a practical solution for enhancing reverse-link capacity and improving performance in CDMA cellular system operations. The result in the letter can find its applications to legacy IS-95/cdma2000 1x base stations with simple modifications.Index Terms-Code-division multiple access (CDMA), diversity, multipath fading, receiver complexity.

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Section: Performance Analysismentioning

confidence: 99%

Section: A Conventional -Branch Diversity Receivermentioning

confidence: 99%

Section: A Conventional -Branch Diversity Receivermentioning

confidence: 99%

Section: B Proposed -Branch Diversity Receivermentioning

confidence: 99%

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A New Base Station Receiver for Increasing Diversity Order in a CDMA Cellular System

Choi¹,

Kim

et al. 2004

IEEE Trans. Commun.

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“…First, we experimentally 1 and analytically demonstrate that in the presence of uncoordinated interference, SIMO receive diversity provides increased robustness for a wide range of the signal to interference ratio (SIR) compared to MIMO spatial multiplexing schemes. Such schemes require significantly high SIR margin at the receiver to attain the promised gains.…”

Section: Introductionmentioning

confidence: 99%

The case for SIMO random access in multi-antenna multi-hop wireless networks

Khattab

2011

Wireless Netw

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In this paper, we demonstrate that multiple concurrent asynchronous and uncoordinated Single-Input Multiple-Output (SIMO) transmissions can successfully take place even though the respective receivers do not explicitly null out interfering signals. Hence, we propose simple modifications to the widely deployed IEEE 802.11 Medium Access Control (MAC) to enable multiple non-spatially-isolated SIMO sender-receiver pairs to share the medium. Namely, we propose to increase the physical carrier sense threshold, disable virtual carrier sensing, and enable message-in-message packet detection. We use experiments to show that while increasing the peak transmission rate, spatial multiplexing schemes such as those employed by the IEEE 802.11n are highly non-robust to asynchronous and uncoordinated interferers. In contrast, we show that the proposed multi-flow SIMO MAC scheme alleviates the severe unfairness resulting from uncoordinated transmissions in 802.11 multi-hop networks. We analytically compute the optimal carrier sense threshold based on different network performance objectives for a given node density and number of receive antennas.

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Outage probability analysis of antenna array using maximum ratio combining in spherically invariant fading environment

Sriv

Chayawan

Kumwilaisak

2006

Wireless Communications

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In this paper, the outage probability of maximum ratio combining (MRC) in the spherically invariant fading environment was analyzed. The study was done with and without consideration of the effect of noise. First, the probability density functions (pdf) of signal‐to‐interference plus noise ratio (SINR) and signal‐to‐interference ratio (SIR) were derived. In our derivation, the characteristic pdfs of spherically invariant random process (SIRP) corresponding to the interferences were assumed to be both different and identical. Moreover, both equal and different mean powers of interferences were considered. With the derived pdfs of SINR and SIR, the expressions of outage probability were computed. Numerical analysis was done using three numerical methods known as Gauss–Laguerre, Gauss–Hermite, and Gauss–Legendre integrations. It should be noted that SIRP, the generalization of Gaussian random process, is assumed to have K‐distribution, which is the generalization of Rayleigh. Our analysis was verified by comparing the outage probabilities of the considered environments with those of Rayleigh fading channel. From the numerical results, the derived outage probability converges to that of Rayleigh fading, when the shape parameter of characteristic pdf approaches infinity. Copyright © 2006 John Wiley & Sons, Ltd.

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Outage probability of cellular radio systems usingmaximal ratio combining in Rayleigh fading channel with multiple interferers

Cited by 57 publications

References 4 publications

A New Base Station Receiver for Increasing Diversity Order in a CDMA Cellular System

A New Base Station Receiver for Increasing Diversity Order in a CDMA Cellular System

The case for SIMO random access in multi-antenna multi-hop wireless networks

Outage probability analysis of antenna array using maximum ratio combining in spherically invariant fading environment

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