전송기준신호의 평균을 이용한 차등 UWB 시스템의 성능개선
Performance Improvement of Differential UWB System by Averaging Transmitted Reference Signals
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참고문헌
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초록
본 논문은 UWB-TR(Ultra WideBand-Transmitted Reference) 시스템에서 효과적으로 비트오류확률(BER:Bit Error Rate)을 개선하는 방법에 대해서 제안하였다. 제안하는 DATR(Differential Averaged TR) 시스템은 기존의 ATR(Averaged TR) 시스템과 DTR(Differential TR) 시스템의 장점을 결합하여 이전에 전송한 데이터신호를심볼 단위로 평균하여 차등기법을 적용함으로서 상관기의 기준신호를 개선하여 BER을 향상시키고 전송신호에 기준신호를 전송하지 않음으로서 데이터 전송률을 향상시킬 수 있었다. 이론적인 성능 분석과 모의실험을 통하여 제안하는 시스템이 기존의 UWB-DTR 시스템에 비해서 BER이 향상됨을 보인다.
Abstract
In this paper, we propose the BER performance improvement of the UWB-TR(Ultra WideBand-Transmitted Reference) system. The proposed DATR(Differential Averaging Transmitted Reference) system combines the ATR(Averaged TR) and DTR(Differential TR) system which are using the average of transmitted signals by symbol and the previous signal as a reference, respectively. The improved reference signal is obtained from the correlation of averaged previous transmitted signals and the current received signal. The proposed system shows the improved the BER performance compared with the conventional UWB-DTR system by theoretical analysis and simulation results.
참고문헌 (17)
- R. F. Martin, "Ultra-wideband(UWB) rules and design compliance issues", IEEE International Symposium On Electromagnetic Compatibility, 1, pp.91~96 (2003)
- D. G. Leeper, "Ultrawideband the next step in shortrange wireless", IEEE conf. Radio Frequency Integrated Circuits Symposium RFIC-03, pp.493~496 (2003)
- M. Z. Win, "On the robustness of ultrawide bandwidth signals in dense multipath environments", IEEE Commun. Lett, 2, pp.51~53 (1998)
- M. Z. Win, "On the energy capture of ultrawide bandwidth signals in dense multipath environments", IEEE Comm. Letters, 2(9), pp.245~247 (1998)
- W. M. Gifford, "On transmitted -reference UWB communications", in Proc. 38th Asilomar Conf. on Signals, Systems and Computers, pp.1526~1531 (2004)
- G. D. Hingorani, "A transmitted reference system for communication in random or unknown channels", IEEE Trans. Comm. Theory, 13(3), pp.293~301 (1965)
- R. Hoctor, "Delay-hopped transmitted-reference RF communications", in Proc. IEEE Conf. on Ultra Wideband Sys. and Technol, pp.265~270 (2002)
- Y-L. Chao, "'Optimal and suboptimal receivers for ultra-wideband transmitted reference systems", Proc. IEEE GLOBECOM 2003, pp.759~763 (2003)
- T. Zasowski, "An energy efficient transmitted-reference scheme for ultra wideband communications", UWBST conf. & IWUWBS-04, pp.146~150 (2004)
- R. T. Hoctor, "An overview of delay-hopped transmitted- reference RF communications,'' Technique Information Series: G.E. Research and Development", Technique Information Series: G.E. Research and Development Center, ~ (2002)
- A. D'Amico, "GLRT receivers for UWB systems", IEEE Com- mun. Lett, 9(6), pp.487~489 (2005)
- M. Z. Win, "Characterization of ultrawide bandwidth wireless indoor channels: a communication theoretic view", IEEE JSAC, 20(9), pp.1613~1627 (2002)
- Romme, J, "Transmitted -reference UWB systems using weighted autocorrelation receivers", IEEE Trans. on Microwave Theory and Techniques, 54(4), pp.1754~761 (2006)
- F. Ramiriz-Mireles, "System performance analysis of impulse radio modulation", IEEE Conf. Radio and Wireless Conference RAWCON-98, pp.67~70 (1998)
- Channel modeling subcommittee report final, "J. Foerster", IEEE 802.15.SG3a Study Group, ~ (2002)
- J. M. Cramer, "Evaluation of an ultra wideband propagation channel", IEEE Trans. on Antennas and Propagation, 50(5), pp.561~570 (2002)
- B. Sklar, "Digital Communication, 2nd Edition" (2001), Prentice-Hall