Title :
System Level Comparison of Relay and RF Repeater Based Technologies in WiMAX Systems
Author :
Davydov, Alexei ; Papathanassiou, Apostolos ; Maltsev, Alexander
Author_Institution :
Wireless Stand. & Technol. Group, Intel Corp., Nizhny Novgorod, Russia
Abstract :
Relay and RF repeater technologies are considered as an effective means to improve the system throughput and coverage performance of cellular OFDMA systems. In this paper, we provide a comprehensive system level comparison of relay and RF repeater based systems utilizing multiple antenna techniques. For relay-based systems we consider a novel relay mode selection procedure that allows intelligent interference avoidance within the same cell. The results show that for both downlink (DL) and uplink (UL) transmission the relay-based system can offer both average throughput and coverage enhancements, while the repeater-based system is capable of coverage extension only. The geographical areas that are most suitable for relay or RF repeater modes are also calculated through system level analysis.
Keywords :
OFDM modulation; WiMax; cellular radio; frequency division multiple access; interference suppression; radio repeaters; RF repeater; WiMAX systems; cellular OFDMA systems; intelligent interference avoidance; multiple antenna techniques; relay-based systems; Downlink; Interchannel interference; Power system relaying; Radio frequency; Receiving antennas; Relays; Repeaters; Throughput; Time frequency analysis; WiMAX; RF repeater; Relay; WiMAX; multi-hop; system level simulations;
Conference_Titel :
Mobile WiMAX Symposium, 2009. MWS '09. IEEE
Conference_Location :
Napa Valley, CA
Print_ISBN :
978-1-4244-3989-8
Electronic_ISBN :
978-0-7695-3719-1
DOI :
10.1109/MWS.2009.38
