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Optimization of Link-level Performance and Complexity for the Floating-point and Fixed-point Designs of IEEE 802.16e OFDMA/TDD Mobile Modem  

Sun, Tae-Hyoung (Inha University)
Kang, Seung-Won (Inha University)
Kim, Kyu-Hyun (Inha University)
Chang, Kyung-Hi (Inha University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.43, no.11, 2006 , pp. 95-117 More about this Journal
Abstract
In this paper, we describe the optimization of the link-level performance and the complexity of floating-point and fixed-point methods in IEEE 802.16e OFDMA/TDD mobile modem. In floating-point design, we propose the channel estimation methods for downlink traffic channel and select the optimized method using computer simulation. So we also propose efficent algorithms for time and frequency synchronization, Digital Front End and CINR estimation scheme to optimize the system performance. Furthermore, we describe fixed-point method of uplink traffic and control channels. The superiority of the proposed algorithm is validated using the performances of Detection, False Alarm, Missing Probability and Mean Acquisition Time, PER Curve, etc. For fixed-point design, we propose an efficient methodology for optimized fixed-point design from floating-point At last, we design fixed-point of traffic channel, time and frequency synchronization, DFE block in uplink and downlink. The tradeoff between performance and complexity are optimized through computer simulations.
Keywords
IEEE 802.16e; M-WiMAX; Synchronization; Digital Front End; Fixed-point Simulation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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