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논문 기본 정보

자료유형
학술대회자료
저자정보
Jin-Doo Jeong (한양대학교) Jong-Wha Chong (한양대학교)
저널정보
대한전자공학회 ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications ITC-CSCC : 2008
발행연도
2008.7
수록면
1,781 - 1,784 (4page)

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In this paper, we propose a method to improve the performance of initial channel estimation (CE) for the multiband-OFDM (MB-OFDM) UWB. The performance of the initial CE can be generally improved as increasing the number of the used preamble symbols. The MB-OFDM specification presents two CE symbols per band in preamble format. The performance of CE estimation with two CE symbols may be satisfied in relatively high sensitivity 77.5 and 72.5 ㏈m for 200 Mbps and 480 Mbps data rate, respectively, but can not be enough in the degraded 55 Mbps and 110 Mbps sensitivities such as 83.5 and 80.5 ㏈m, respectively. A method proposed in this paper achieves the performance improvement by extending CE estimation region to packet synchronization (PS) symbols and frame synchronization (FS) symbols including two CE symbols. This can improve the CE performance in the degraded SNR and increase the link-margin by reducing the error rate in physical-layer header. The link-margin improvement obtained by the proposed CE preamble can induce the decrease of error-rate in physical-layer header and increase of communication throughput. Simulation results for the proposed initial method show that the performance is improved by about 0.6 ㏈ at 104 bit-errorrate using ‘3’ symbols than initial method using only two CE symbols.

목차

Abstract
1. Introduction
2. Initial Channel Estimation on Symbol Averaging
3. Preamble Format of MB-OFDM
4. Proposed Initial Channel Estimation for MB-OFDM UWB
5. Simulation Results
6. Conclusion
Acknowledgement
References

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UCI(KEPA) : I410-ECN-0101-2013-569-001142979