Co-channel interference measurement method for mobile communication

Kozono, Shigeru

doi:10.1109/t-vt.1987.24091

Cited by 20 publications

(10 citation statements)

References 2 publications

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“…However, in interference-limited fading environments as in cellular communications systems where the level of the cochannel interference is sufficiently high as compared to the thermal noise, the most effective performance criterion is to select the highest signalto-interference ratio (SIR; SIR-based selection diversity) [4]. SIR can be measured in real time both in base stations (uplink) and in mobile stations (downlink) using specific SIR estimators as well as those for both analog [5]- [7] and digital wireless systems (e.g., GSM, IS-54) [8], [9]. In order to study the effectiveness of any modulation scheme and the type of diversity used, it is required to evaluate the system's performance over the channel conditions.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of SIR-based dual selection diversity over correlated Nakagami-m fading channels

Karagiannidis

2003

IEEE Trans. Veh. Technol.

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Signal-to-interference-ratio (SIR)-based selection diversity is an efficient technique to mitigate fading and cochannel interference in wireless communications systems. In this paper, an approach to the performance analysis of dual SIR-based selection diversity over correlated Nakagamifading channels with arbitrary parameters is presented. Useful formulae for the outage probability, the average output SIR, and the average error probability for coherent, noncoherent, and multilevel modulation schemes are derived. The main contribution of this paper is that, for the first time, the proposed analysis is carried out assuming correlated Nakagamifading with arbitrary parameters for both the desired signals and the cochannel interferers, which is the real scenario in practical dual selection diversity systems with insufficient antenna spacing. It is shown that the general results presented in the paper reduce to the specific ones for the independent fading case, previously published. Numerical and simulation results are also presented to show the effects of various parameters as the fading severity, input SIR unbalance, and level of correlation to the system's performance.

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Section: Introductionmentioning

confidence: 99%

Performance analysis of SIR-based dual selection diversity over correlated Nakagami-m fading channels

Karagiannidis

2003

IEEE Trans. Veh. Technol.

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“…There are many methods providing viable solutions for real-time SIR estimations under various channel conditions. These solutions are based on either the method of moments or the histogram matching concept [44,45]. Let m ssc be the instantaneous SIR at the output of SSC and m t the switching threshold.…”

Section: Joint Pdf Of Ssc Input Sirs and Pdf Of Ssc Output Sirmentioning

confidence: 99%

Cochannel interference effect on BEP performance of SSC receiver in correlated Rician fading

Panajotović

Stefanović

Drača

2010

Journal of the Franklin Institute

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“…Since the co-channel interference comes from another distant mobile cell, the amplitude I is usually less than S. Applying the method of moments, a carrier to interference ratio estimator can be obtained by [5] (4) with k = 2af/bl-1. Assuming the envelope output is ergodic, the ensemble average can be derived from time averaging.…”

Section: If At Is Properly Selected To Make $S(t) R#~s(t+at) And(t) Amentioning

confidence: 99%

“…As far as we know, the only CIR estimation method in the open literature is that proposed by Kozono [5]. He used the statistical property of the received wave€orm's envelope and applied the method of moments to estimate the CIR of a phasemodulated carrier that is corrupted by a single interferer.…”

Section: Introductionmentioning

confidence: 99%

On co-channel interference measurements

Chen

Su²

Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97

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Spectral eficiency of a cellular mobile radio system is enhanced throagh the reuse of the available spectrum.The resulting co-channel inte~erence, however, also limits the system capacity. Power cont~ol is needed so that w-channel interference can be maintained within a tolerable bound. Therefore, wchannel carrier to interference ratio (CIR) is often wed as a qaulity indicator for received si@. Various power wntrol algorithms assume perfect CIR measurement have been proposed but there is no mentioning of the measurement method. This paper presents viable solutions for d -t i m e CIR estimations under either additive white Gavssian noise (AWGN) or Ragleigh fading condition. A new algorithm that w e s the concept of probability density finc-tion matching is also proposed to measure CIR an the presence of mdtiple interferers. Numerical results are provided to demonstrate the usefelness of the pmposed algorithms.

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Co-channel interference measurement method for mobile communication

Cited by 20 publications

References 2 publications

Performance analysis of SIR-based dual selection diversity over correlated Nakagami-m fading channels

Performance analysis of SIR-based dual selection diversity over correlated Nakagami-m fading channels

Cochannel interference effect on BEP performance of SSC receiver in correlated Rician fading

On co-channel interference measurements

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