Title :
Comparative study of cooperative networks with differential modulation
Author :
Cho, Woong ; Choi, HyunKyun ; Oh, Hyun Seo
Author_Institution :
Electron. & Telecommun. Res. Inst. (ETRI), South Korea
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.
Keywords :
channel estimation; decoding; diversity reception; modulation; protocols; resource allocation; space-time codes; transceivers; wireless channels; amplify-and-forward relaying protocol; channel estimation; cooperative network; decode-and-forward relaying protocol; differential modulation; error rate performance minimization; optimum resource allocation; space-time code; spatial diversity benefit; transceiver; wireless communication; Channel estimation; Diversity methods; Error analysis; MIMO; Protocols; Relays; Resource management; Space time codes; Transceivers; Wireless communication; Cooperative systems; MIMO systems; differential phase shift keying; error analysis; resource management;
Conference_Titel :
Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-2423-8
Electronic_ISBN :
978-1-4244-2424-5
DOI :
10.1109/ICCS.2008.4737387