Cognitive medium access: Constraining interference based on experimental models

被引：128

作者：

Geirhofer, Stefan ^{[1
]}

Tong, Lang ^{[1
]}

Sadler, Brian M. ^{[2
]}

机构：

[1] Cornell Univ, Dept Elect & Comp Engn, Ithaca, NY 14853 USA

[2] USA, Res Lab, Adelphi, MD 20783 USA

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2008年 / 26卷 / 01期

关键词：

cognitive radio; dynamic spectrum access; standards coexistence; IEEE; 802.11b; resource management;

D O I：

10.1109/JSAC.2008.080109

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper we design a cognitive radio that can coexist with multiple parallel WLAN channels while abiding by an interference constraint. The interaction between both systems is characterized by measurement and coexistence is enhanced by predicting the WLAN's behavior based on a continuous-time Markov chain model. Cognitive Medium Access (CMA) is derived from this model by recasting the problem as one of constrained Markov decision processes. Solutions are obtained by linear programming. Furthermore, we show that optimal CMA admits structured solutions, simplifying practical implementations. Preliminary results for the partially observable case are presented. The performance of the proposed schemes is evaluated for a typical WLAN coexistence setup and shows a significant performance improvement.

引用

页码：95 / 105

页数：11

共 25 条

[1] NeXt generation/dynamic spectrum access/cognitive radio wireless networks: A survey [J].

Akyildiz, Ian F. ;

Lee, Won-Yeol ;

Vuran, Mehmet C. ;

Mohanty, Shantidev .

COMPUTER NETWORKS, 2006, 50 (13) :2127-2159

[2]

Altman E., 1999, STOCH MODEL SER

[3]

[Anonymous], 2006, P TAPAS

[4]

[Anonymous], SPEC BLUET SYST

[5]

[Anonymous], 8021198378 IEEE

[6]

*ANSI IEEE, 1999, 80211 ANSI IEEE

[7]

*ANSI IEEE, 1999, 80211B1999 ANSI IEEE

[8]

AVALLONE S, 2004, D ITG V24 MANUAL

[9] Transmission scheduling for optimizing sensor network lifetime: A Stochastic shortest path approach [J].

Chen, Yunxia ;

Zhao, Qing ;

Krishnamurthy, Vikram ;

Djonin, Dejan .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2007, 55 (05) :2294-2309

[10] Coexistence mechanisms for interference mitigation in the 2.4-GHz ISM band [J].

Chiasserini, CF ;

Rao, RR .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2003, 2 (05) :964-975

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