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학술대회 Comparative Study of Cooperative Networks with Differential Modulation
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저자
조웅, 최현균, 오현서
발행일
200811
출처
International Conference on Communication Systems (ICCS) 2008, pp.1269-1274
DOI
https://dx.doi.org/10.1109/ICCS.2008.4737387
협약과제
08MC2800, VMC 기술 개발, 오현서
초록
Cooperative networks have been considered for their spatial diversity benefit in wireless communications. The signal in the cooperative networks can be transmitted by a repetitive manner or using space-time codes. For both transmission schemes, we consider the error performance and resource allocation employing differential modulation which bypasses the channel estimation at the transceiver. We derive the error rate of the each scheme by adopting both decode-and-forward (DF) and amplify-and-forward (AF) relaying protocols. Then, three optimum resource allocations, i.e., energy, location, and joint energy and location, are carried out to minimize the error rate. Using these results, we compare the systems with different relaying protocols. © 2008 IEEE.
키워드
Cooperative systems, Differential phase shift keying, Error analysis, MIMO systems, Resource management
KSP 제안 키워드
Amplify-and-forward (af), Channel estimation(CE), Cooperative Networks, Cooperative system, Differential modulation, Differential phase-shift keying(DPSK), Error analysis, Error performance, MIMO system, Resource management, Space time(ST)