Browse > Article
http://dx.doi.org/10.3745/KIPSTC.2006.13C.6.677

An analysis of link margin for MB-OFDM UWB system in multi-path channel  

Shin, Cheol-Ho (한국전자통신연구원)
Choi, Sang-Sung (한국전자통신연구원 무선 홈네트워크연구팀)
Pack, Jeong-Ki (충남대학교 전파공학과)
Publication Information
The KIPS Transactions:PartC / v.13C, no.6, 2006 , pp. 677-684 More about this Journal
Abstract
This paper investigates the link margin of MB-OFDM UWB system quantitatively. Various simulations are performed considering the implementation loss by imperfect synchronization unit and the effect of multi-path fading channels. MB-OFDM UWB system uses ZP(Zero Padding) instead of CP(Cyclic Prefix) and supports two transmission modes; one is TFI(Time Frequency Interleaving) mode that transmits OFDM symbols using different carrier frequency from symbol to symbol according to Time Frequency(TF) codes, the other is FFI(Fixed Frequency Interleaving) mode that transmits OFDM symbols using a specific carrier frequency. The advantage of if and TFI is to be able to increase the transmitting power effectively compared to the existed OFDM systems that transmit the signal continuously at the same average transmitting power. From the analysis results of Ink margin, to guarantee the service range of 4m in 200Mbps mode, TFI mode must necessarily be implemented and the service range of 480Mbps mode is estimated about 1-2m in the line-of-sight multi-path channel (CMI).
Keywords
MB-OFDM UWB; Implementation Loss; Link Margin;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 J-J. Van de Beek, O. Edfors, M. Sandell, S. K. Wilson, P. O. Borjesson, 'On Channel Estimation in OFDM Systems,' IEEE 45th Vehicular Technology Conference(VTC), Vol.2, pp.257-261, 22-28 July, 1995
2 M. Speth, S. A. Fechtel, G. Fock, H. Meyr, 'Optimum Receiver Design for Wireless Broad-Band Systems Using OFDM-Part I', IEEE Transactions on Communications, Vol.47, pp.1668-1677, Nov., 1999   DOI   ScienceOn
3 M. Zhao, P. Qiu, J. Tang, 'Sampling Rate Conversion and Symbol Timing for OFDM Software Receiver', IEEE 2002 International Conference on Communications, Circuits and Systems and West Sino Expositions, Vol.1, pp.114-118, July, 2002   DOI
4 Jeff Foerster, 'Channel Modeling Sub-committee Report Final,' IEEE P802.15-02/368r5-SG3a, Nov., 2002
5 A. Batra, J. Balakrishnan, G. R. Aiello, J. R. Foerster, A. Dabak, 'Design of Multiband OFDM System for Realistic UWB Channel Environment,' IEEE Trans. On Microwave Theory and Techniques, Vol. 52, No. 9, pp. 2123-2138, Sept., 2004   DOI   ScienceOn
6 A. Batra et al., 'Multi-band OFDM Physical Layer Proposal for IEEE 802.15 Task Group 3a', IEEE P802.15-03/268r3, March 2004
7 신철호, 이한호, 최상성, 백정기, '4 병렬 동기 구조를 이용한 MB-OFDM UWB 수신기 설계 및 평가', 한국전자파학회논문지, Vol.16, No.11, pp.1075-1085, Nov., 2005   과학기술학회마을
8 P. H. Moose, 'A Technique for Orthogonal Frequency Division Multiplexing Frequency Offset Correction', IEEE Transactions on Communications., Vol.42, pp.2908-2914, Oct., 1994   DOI   ScienceOn
9 A. Miaoudakis, A. Koukourgiannis, G. Kalivas, 'Carrier Frequency Offset Estimation and Correction for HiperLan/2 WLANs', Seventh International Symposium on Computers and Communications(ISCC'02), pp.693-698, July, 2002   DOI