Performance of Dual-Hop Transmissions with Fixed Gain Relays over Generalized-K Fading Channels

We present the end-to-end performance of dual-hop wireless communication systems with non-regenerative fixed gain relays operating over independent not necessarily identically Generalized-K (KG) fading channels. New closed-form expressions are derived for the moments of the end-to-end signal-to-noise ratio (SNR), while the corresponding moment-generating function (MGF) is accurately approximated with the aid of Pade approximants theory. Useful performance criteria are studied; the average end-to-end SNR and the amount of fading, which are expressed in closed form, the average bit-error probability for several coherent, noncoherent, and multilevel modulation schemes, and the outage probability, which are both accurately approximated using the well-known MGF approach. Furthermore, novel closed-form expression is obtained for the gain of semi-blind relays over KG fading channels. The proposed mathematical analysis is complemented by various performance evaluation results, which demonstrate the accuracy of the theoretical approach.

[1]  Salama Ikki,et al.  Performance Analysis of Dual-Hop Relaying Communications Over Generalized Gamma Fading Channels , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[2]  George K. Karagiannidis,et al.  Performance bounds of multihop wireless communications with blind relays over generalized fading channels , 2006, IEEE Transactions on Wireless Communications.

[3]  Mohamed-Slim Alouini,et al.  Digital Communication Over Fading Channels: A Unified Approach to Performance Analysis , 2000 .

[4]  George K. Karagiannidis,et al.  Performance analysis of a class of GSC receivers over nonidentical Weibull fading channels , 2005, IEEE Transactions on Vehicular Technology.

[5]  P. Mohana Shankar,et al.  Error Rates in Generalized Shadowed Fading Channels , 2004, Wirel. Pers. Commun..

[6]  J. Ritcey,et al.  Pade approximations of probability density functions , 1994 .

[7]  Amrane Houacine,et al.  Statistical characterisation and modelling of SAR images , 2002, Signal Process..

[8]  Mazen O. Hasna,et al.  Harmonic mean and end-to-end performance of transmission systems with relays , 2004, IEEE Transactions on Communications.

[9]  George K. Karagiannidis,et al.  Nonregenerative Dual-Hop Cooperative Links with Selection Diversity , 2006, EURASIP J. Wirel. Commun. Netw..

[10]  Ranjan K. Mallik,et al.  Higher order statistics of antenna subset diversity , 2003, IEEE Trans. Wirel. Commun..

[11]  Mazen O. Hasna,et al.  A performance study of dual-hop transmissions with fixed gain relays , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[12]  Victor Adamchik,et al.  The algorithm for calculating integrals of hypergeometric type functions and its realization in REDUCE system , 1990, ISSAC '90.

[13]  P. Takis Mathiopoulos,et al.  Diversity reception over generalized-K (KG) fading channels , 2007, IEEE Transactions on Wireless Communications.

[14]  Joseph Lipka,et al.  A Table of Integrals , 2010 .

[15]  Mazen O. Hasna,et al.  Outage probability of multihop transmission over Nakagami fading channels , 2003, IEEE Communications Letters.

[16]  George K. Karagiannidis,et al.  On the performance analysis of digital communications over generalized-K fading channels , 2006, IEEE Communications Letters.

[17]  G. Karagiannidis,et al.  BER analysis of collaborative dual-hop wireless transmissions , 2004 .