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Conference Paper
Comparative Study of Cooperative Networks with Differential Modulation
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- Authors
- Woong Cho, Hyun Kyun Choi, Hyun Seo Oh
- Issue Date
- 2008-11
- Citation
- International Conference on Communication Systems (ICCS) 2008, pp.1269-1274
- Language
- English
- Type
- Conference Paper
- Project Code
- 08MC2800, Vehicle Multi-hop Communication Technology Development, Hyun Seo Oh
- Abstract
- 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.
- KSP Keywords
- Amplify-and-forward (af), Channel estimation(CE), Cooperative Networks, Differential modulation, Error performance, Space time(ST), Space-time codes, Spatial diversity(SD), comparative study, error rate, resource allocation(RA)