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학술대회
Design and Implementation of Robust Time/Frequency Offset Tracking Algorithm for MIMO-OFDM Receivers
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- 발행일
- 200605
- 출처
- Vehicular Technology Conference (VTC) 2006 (Spring), pp.1191-1195
- 협약과제
- 05MM1100, 4세대 이동통신 기술개발, 황승구
- 초록
- In this paper, the robust time and frequency offset tracking algorithms and architecture for high throughput wireless local area network (WLAN) systems are presented. The designed architecture has feedback and feed forward compensation loop with well defined loop filter coefficients obtained by various experiments for practical implementation. Considered functional blocks include residual CFO estimator, carrier phase estimator, and timing error estimator. In addition to the algorithm descriptions of these blocks, the implementation method is presented, as they are modeled in the floating/cycle and bit true fixed point C model. These C models have been used as a reference for RTL coding and its verification. The design has been implemented successfully on an FPGA device. The proposed tracking method produces results very close to that of the offset-free system. © 2006 IEEE.
- KSP 제안 키워드
- Carrier phase, Designed architecture, Error estimator, FPGA device, Feedforward Compensation, Filter coefficients, Fixed-point, High Throughput Wireless, High throughput(HTP), Implementation method, Local Area Network(LAN)