DocumentCode
3220891
Title
Bounds on the expected optimal channel assignment in Rayleigh channels
Author
Naparstek, Oshri ; Leshem, Amir
Author_Institution
Sch. of Eng., Bar-Ilan Univ., Ramat-Gan, Israel
fYear
2012
fDate
17-20 June 2012
Firstpage
294
Lastpage
298
Abstract
The channel assignment problem is highly important to OFDMA cognitive radio systems. Tight bounds on the optimal channel assignment are crucial for the performance evaluation of various channel assignment schemes. In this paper we derive the mean of the maximal sum rate channel assignment for i.i.d Rayleigh fading channels. We provide upper and lower bounds on the expected optimal assignment. We then show that the bounds are asymptotically tight in both high SNR and as the number of users increases.
Keywords
OFDM modulation; Rayleigh channels; cognitive radio; frequency division multiple access; performance evaluation; OFDMA cognitive radio systems; Rayleigh fading channels; SNR; expected optimal channel assignment; maximal sum rate channel assignment; orthogonal frequency division multiple access systems; performance evaluation; Approximation methods; OFDM; Rayleigh channels; Resource management; Signal to noise ratio;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing Advances in Wireless Communications (SPAWC), 2012 IEEE 13th International Workshop on
Conference_Location
Cesme
ISSN
1948-3244
Print_ISBN
978-1-4673-0970-7
Type
conf
DOI
10.1109/SPAWC.2012.6292913
Filename
6292913
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