Title :
Evaluation of VoIP Performance in Downlink Cellular Networks With Multihop Relaying
Author :
Marchenko, Nikolaj ; Hoydis, Jakob ; Chindapol, Aik ; Schoenen, Rainer
Author_Institution :
Siemens Corporate Res., Princeton
Abstract :
We analyze the impacts of multi-hop relaying on the quality of service of voice transmission in the downlink OFDMA communication system. It is shown that the system performance in terms of capacity and quality strongly depends on deployment and operating parameters such as the location of relays, traffic loads and the allowable packet error rate. The impact of relaying is less evident when the traffic load is light and the base station can effectively cover the whole cell. In the high traffic load region, multi-hop relaying is most effective in reducing the outage probability while increasing the cell throughput.
Keywords :
3G mobile communication; Internet telephony; OFDM modulation; cellular radio; quality of service; telecommunication traffic; voice communication; OFDMA communication; VoIP performance; downlink cellular networks; multihop relaying; packet error rate; quality of service; telecommunication traffic load; voice transmission; Communication system traffic; Downlink; Error analysis; Land mobile radio cellular systems; Quality of service; Relays; Speech analysis; Spread spectrum communication; System performance; Telecommunication traffic;
Conference_Titel :
Mobile Adhoc and Sensor Systems, 2007. MASS 2007. IEEE International Conference on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-1454-3
Electronic_ISBN :
978-1-4244-1455-0
DOI :
10.1109/MOBHOC.2007.4428718
