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一種新的多速率時(shí)頻碼MB-OFDM超寬帶系統(tǒng)模型

董偉杰 俞能海 尹勇

董偉杰, 俞能海, 尹勇. 一種新的多速率時(shí)頻碼MB-OFDM超寬帶系統(tǒng)模型[J]. 電子與信息學(xué)報(bào), 2006, 28(10): 1858-1861.
引用本文: 董偉杰, 俞能海, 尹勇. 一種新的多速率時(shí)頻碼MB-OFDM超寬帶系統(tǒng)模型[J]. 電子與信息學(xué)報(bào), 2006, 28(10): 1858-1861.
Dong Wei-jie, Yu Neng-hai, Yin Yong. A Novel Time-Frequency Coded Multi-rate MB-OFDM UWB System Model[J]. Journal of Electronics & Information Technology, 2006, 28(10): 1858-1861.
Citation: Dong Wei-jie, Yu Neng-hai, Yin Yong. A Novel Time-Frequency Coded Multi-rate MB-OFDM UWB System Model[J]. Journal of Electronics & Information Technology, 2006, 28(10): 1858-1861.

一種新的多速率時(shí)頻碼MB-OFDM超寬帶系統(tǒng)模型

A Novel Time-Frequency Coded Multi-rate MB-OFDM UWB System Model

  • 摘要: 該文提出了一種新的多用戶超寬帶系統(tǒng)模型,該模型基于MB-OFDM系統(tǒng),各個(gè)用戶的數(shù)據(jù)通過在時(shí)域和頻域同時(shí)進(jìn)行的一種編碼(Time-Frequency Code,TFC)進(jìn)行區(qū)分。同時(shí)給出了針對(duì)這種系統(tǒng)的一種自適應(yīng)TFC分配算法,該算法在保證每個(gè)用戶的最小傳輸速率請(qǐng)求的前提下,使傳輸功率最小化。理論分析和實(shí)驗(yàn)表明,該系統(tǒng)及其相應(yīng)的TFC分配算法可以有效地增加多速率用戶接入系統(tǒng)的能力,并且有效地節(jié)省發(fā)射功率,而這正是一個(gè)超寬帶系統(tǒng)所需要的。
  • FCC. First report order. Tech. Rep. 02-48, Apr. 2002.[2]Win M Z, Scholtz R A. Impulse radio: how it works[J].IEEE Commun. Lett.1998, 2(2):36-38[3]Fisher R, Laughlin M M, Welborn M. DS-UWB physical layer submission to 802.15 task group 3a. IEEE Tech. Rep. 802.15-04/0137r1, 2004.[4]IEEE. Multi-band OFDM physical layer proposal for IEEE802.15 task group 3a. Tech. Rep. 802.15-03/268r3, 2003.[5]Xu B, Bi G. Channel estimation using complementary sequence pairs for UWB/OFDM systems[J].Electronics Letters.2004, 40(19):1196-1197[6]Batra A, Balakrishnan J, Aiello G R, et al.. Design of a multiband OFDM system for realistic UWB channel environments[J].IEEE Trans. on Microwave Theory and Techniques.2004,52(9):2123-2138[7]Saberinia E, Tewfik A H, Gupta R. Pilot assisted multi-user UWB communications. Vehicular Technology Conference, 2003, 3: 1885-1889.[8]Saberinia E, Tewfik A H. Multi-user UWB-OFDM communica-tions. PACRIM, 2003, 1: 127-130.[9]Rangnekar A, Sivalingam K M. Multiple channel scheduling in UWB based IEEE 802.15.3 networks. Broadband networks, First International Conference on, 2004: 406-415.[10]Foerster J. Channel modeling sub-committee report final. IEEE Tech. Rep. 802.15-02/490r1-SG3a, 2002.[11]Woodworth C B, Karol M J, Haas Z J, et al.. Spectrally efficient universal time slots using time-frequency-code. Personal, Indoor and Mobile Radio Communications, 1994, 3: 1009-1013.[12]Jiho J, Kwang B L. Transmit power adaptation for multiuser OFDM systems[J].IEEE Journal on Selected Areas in Communications.2003, 21(2):171-178[13]Wong C Y, Cheng R S, Letaief K B, et al.. Multiuser OFDM with adaptive subcarrier, bit and power allocation[J].IEEE Journal on Selected Areas in Communications.1999, 17(10):1747-1758[14]Proakis J G. Digital Communications (Fourth Edition). McGraw Hill, 2001.
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出版歷程
  • 收稿日期:  2005-02-06
  • 修回日期:  2005-07-09
  • 刊出日期:  2006-10-19

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