Performance of MRC satellite diversity receivers over correlated lognormal and gamma fading channels

Abstract

Multi-satellite or orbital diversity is an effective technique to reduce the large fading margins in satellite communications under fading conditions. Transmitted signals from multiple angularly-spaced satellites are combined at the terminal station which is equipped with multiple antennas or a single multiple-input (multiple satellite feed -MSF) antenna. Typical signal processing techniques used for diversity combining of the multiple satellite signals are Selection Combining (SC) and Maximal Ratio Combining (MRC). The subject of this paper is to present physical statistical models for the signal-to-noise ratio distribution as well as a closed-form mathematical expression for the outage probability of dual-satellite orbital diversity with MRC operating under correlated log-normal or gamma fading conditions.

Error probability and channel capacity analysis of wireless system over inverse gamma shadowed fading channel with selection diversity

“…[1][2][3][4] The use of LN model has also been studied in different environments, namely, ultra-wideband (UWB) indoor channel, IEEE 802. 9,10 The role of LN in capturing the statistics of the composite fade of two or more simultaneous fading mechanism has been studied extensively in the previous. [5][6][7][8] Also, LN distribution is used for radar and satellite communication to model multipath and rain fall rate statistics.…”

“…[5][6][7][8] Also, LN distribution is used for radar and satellite communication to model multipath and rain fall rate statistics. 9,10 The role of LN in capturing the statistics of the composite fade of two or more simultaneous fading mechanism has been studied extensively in the previous. [11][12][13][14][15] However, the complex mathematical representation of LN distribution endeavours analytical intractability in deriving the closed-form solutions of various digital communication performance metrics, [1][2][3][4][5][6][7][8] and it complicates the analysis of composite fading.…”

Feasibility of UAV Link Space Diversity in Wooded Areas

“…One way to improve these fades is to use diversity techniques, many of which have been published for satellite or terrestrial links, for example, polarization diversity [1], angle diversity [2], frequency diversity [3], transmit diversity [4], and space diversity [2,3]. Moreover, statistical models of signal-to-noise distribution or mathematical expression of outage probability have also been published [5,6].…”