Cognitive Code-Division Links with Blind Primary-System Identification

被引：22

作者：

Li, Ming ^{[1
]}

Batalama, Stella N. ^{[1
]}

Pados, Dimitris A. ^{[1
]}

Melodia, Tommaso ^{[1
]}

Medley, Michael J. ^{[2
]}

Matyjas, John D. ^{[2
]}

机构：

[1] SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA

[2] USAF, Res Lab, RIGF, Rome, NY 13441 USA

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2011年 / 10卷 / 11期

关键词：

Blind user identification; code-channel allocation; code-division multiple-access; cognitive radio; dynamic spectrum access; power allocation; signal-to-interference-plus-noise ratio; RADIO; SEPARATION; CHANNEL; DESIGN;

D O I：

10.1109/TWC.2011.091911.101260

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：

We consider the problem of cognitive code-division channelization (simultaneous power and code-channel allocation) for secondary transmission links co-existing with an unknown primary code-division multiple-access (CDMA) system. We first develop a blind primary-user identification scheme to detect the binary code sequences (signatures) utilized by primary users. To create a secondary link we propose two alternative procedures-one of moderate and one of low computational complexity-that optimize the secondary transmitting power and binary code-channel assignment in accordance with the detected primary code channels to avoid "harmful" interference. At the same time, the optimization procedures guarantee that the signal-to-interference-plus-noise ratio (SINR) at the output of the maximum SINR linear secondary receiver is no less than a certain threshold to meet secondary transmission quality of service (QoS) requirements. The extension of the channelization problem to multiple secondary links is also investigated. Simulation studies presented herein illustrate the theoretical developments.

引用

页码：3743 / 3753

页数：11

共 27 条

[11] Rank-2-optimal Adaptive design of binary spreading codes [J].