DocumentCode :
3274403
Title :
Sum of correlated gamma variates with application to the performance of wireless systems over Nakagami channels
Author :
Alouini, Mohamed-Slim ; Abdi, Ali ; Kaveh, Mostafa
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
fYear :
2001
fDate :
2001
Firstpage :
56
Abstract :
We extend the Moschopoulos (1985) representation for the probability density function (PDF) of the sum of independent gamma variates to the PDF of the sum of correlated gamma variates and provide an exact PDF-based approach for the performance analysis of many wireless communication systems over not necessarily independent identically distributed (i.i.d.) Nakagami fading channels. The key feature of this representation is that it is in the from of a single gamma series which implies that all the manipulations that can be performed for the i.i.d. case can now also be done for the non-i.i.d. case. Aside from putting under the same umbrella many of the past results obtained via characteristic function (CF)-based approaches, the proposed PDF-based approach also allows the derivation of additional performance measures which are harder to analyze via CF-based approaches
Keywords :
cellular radio; cochannel interference; correlation methods; diversity reception; fading channels; gamma distribution; radio receivers; MRC diversity receiver; Moschopoulos representation; PDF; cellular mobile radio systems; characteristic function; cochannel interference; correlated gamma variates sum; gamma series; i.i.d. Nakagami channels; independent gamma variates sum; maximal-ratio combining; performance analysis; performance measures; probability density function; wireless communication systems; wireless systems performance; Diversity reception; Fading; Interchannel interference; Land mobile radio; Performance analysis; Probability density function; Radiofrequency interference; Shape; Statistical analysis; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
Type :
conf
DOI :
10.1109/ISIT.2001.935919
Filename :
935919
Link To Document :
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