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Optimization of Fixed-point Design on the Digital Front End in IEEE 802.16e OFDMA-TDD System  

Kang Seung-Won (인하대학교 정보통신대학원)
Sun Tae-Hyoung (인하대학교 정보통신대학원)
Chang Kyung-Hi (인하대학교 정보통신대학원)
Lim In-Gi (한국전자통신연구원)
Eo Ik-Soo (한국전자통신연구원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.7C, 2006 , pp. 735-742 More about this Journal
Abstract
In this paper, we explain the operation scheme and fixed-point design method of DFE (Digital Front End), which performs DC offset compensation, automatic frequency control, and automatic gain control over the input signal to the UE (User Equipment) receiver of IEEE 802.16e OFDMA-TDD system. Then, we analyze the performance of DFE under ITU-R M. 1225 Veh-A 60km/h channel environment. To optimize the fixed-point design of DFE, we reduce the number of bit resulted from calculation without performance degradation, leading to the decreased complexity of the operation in H/W, and design the Loop filter with considering trade-off between the Acquisition time and the Stability.
Keywords
IEEE 802.16e OFDMA; Digital Front End; DC Offset Compensation; AFC; AGC;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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