Switch and examine transmit diversity for spectrum sharing systems
Type
Conference PaperKAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2011-06Permanent link to this record
http://hdl.handle.net/10754/564389
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In this paper, we develop a switch and examine transmit diversity algorithm for spectrum sharing cognitive networks. We consider a cognitive network composed of a primary link that employs constant rate and constant power transmission scheme with automatic-and-repeat request (ARQ) protocol, while the secondary link is composed of a fixed power multiple-antenna secondary transmitter and a single antenna receiver. Our objective is to develop a low complex transmit diversity algorithm at the secondary transmitter that maximizes the performance of the secondary link in terms of the effective throughput while maintaining a predetermined maximum loss in the packet rate of the primary link. In achieving this objective, we develop an algorithm that selects the best antenna, which maintains the quality of the secondary link in terms of signal-to-noise ratio above a specific threshold, based on overhearing the acknowledgment (ACK) and negative acknowledgment (NACK) feedback messages transmitted over the primary link. We also develop closed form expressions for the bit error rates and the effective throughput of the secondary link. © 2011 IEEE.Citation
Abdallah, M., Alouini, M.-S., & Qaraqe, K. A. (2011). Switch and examine transmit diversity for spectrum sharing systems. 2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications. doi:10.1109/spawc.2011.5990377Journal
2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless CommunicationsConference/Event name
2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2011ISBN
9781424493326ae974a485f413a2113503eed53cd6c53
10.1109/SPAWC.2011.5990377