Title
A Real-Time Implementation of the Mobile WiMAX ARQ and Physical Layer
Abstract
This paper presents an innovative software-defined radio architecture for the real-time implementation of WiMAX transceivers. The architecture consists of commercially available field-programmable gate array and digital signal processor modules. We show how the architecture can be used for the real-time implementation of a full-featured standard-compliant time-division duplex WiMAX physical layer together with the ARQ functionality of the MAC layer. Both the mobile and the base station contain a transmitter and a receiver to enable real-time concurrent downlink and uplink communications. The design supports the different configurations defined by the standard and the WiMAX Forum. This work also provides the verification and validation of the proposed real-time implementation based on repeatable and reproducible performance evaluation considering the reference scenarios defined by the WiMAX Forum, including both static and mobile scenarios. Typical figures of merit such as physical-layer bit and frame error rates and MAC-layer throughput are obtained with the help of a custom-made real-time channel emulator implementing the channel models defined by the WiMAX Forum.
Year
DOI
Venue
2015
10.1007/s11265-014-0890-3
Journal of Signal Processing Systems
Keywords
Field
DocType
IEEE 802.16e,WiMAX,Physical layer,SDR,FPGA,DSP,Downlink,Uplink,OFDMA,ARQ
Base station,Transceiver,Computer science,Digital signal processor,Communication channel,Real-time computing,WiMAX,Physical layer,Throughput,Telecommunications link
Journal
Volume
Issue
ISSN
78
3
1939-8018
Citations 
PageRank 
References 
0
0.34
14
Authors
6