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脈沖無(wú)線電通信系統(tǒng)的正交定時(shí)估計(jì)方法

尹華銳 徐佩霞 衛(wèi)國(guó)

尹華銳, 黃, 徐佩霞, 衛(wèi)國(guó). 脈沖無(wú)線電通信系統(tǒng)的正交定時(shí)估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2006, 28(9): 1630-1635.
引用本文: 尹華銳, 黃, 徐佩霞, 衛(wèi)國(guó). 脈沖無(wú)線電通信系統(tǒng)的正交定時(shí)估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2006, 28(9): 1630-1635.
Yin Hua-rui, Huang Han, Xu Pei-xia, Wei Guo. Orthogonal Timing Recovery of Impulse Radio[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1630-1635.
Citation: Yin Hua-rui, Huang Han, Xu Pei-xia, Wei Guo. Orthogonal Timing Recovery of Impulse Radio[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1630-1635.

脈沖無(wú)線電通信系統(tǒng)的正交定時(shí)估計(jì)方法

Orthogonal Timing Recovery of Impulse Radio

  • 摘要: 超寬帶(UWB)通信是目前無(wú)線通信研究的熱點(diǎn),其中脈沖無(wú)線電(Impulse Radio, IR)技術(shù)采用亞納秒脈沖信號(hào)作為信息傳輸?shù)妮d體,數(shù)據(jù)傳輸速率大于100Mbps,具有超寬頻譜和極低功率譜密度的優(yōu)點(diǎn)。在采用 IR技術(shù)的UWB通信中,脈沖的捕捉和同步是它的核心技術(shù)和難點(diǎn)。該文給出了采用基于正交分解進(jìn)行脈沖同步的方法,相對(duì)于傳統(tǒng)的使用匹配濾波器進(jìn)行的定時(shí)估計(jì)和接收,具有結(jié)構(gòu)簡(jiǎn)單,實(shí)現(xiàn)方便,在室內(nèi)密集多徑信道下和極大的符號(hào)間干擾下均能穩(wěn)定工作的特點(diǎn)。仿真表明,該方法對(duì)多徑捕獲、脈沖重復(fù)頻率和定時(shí)估計(jì)都有很好的性能。
  • Alamouti S M. A simple transmit diversity technique for wireless communications[J].IEEE J. on Selected Areas in Communications.1998, 16(8):1451-[2]Tarokh V, Jafarkhani H, Calderbank A R. Space-time block codes from orthogonal designs[J].IEEE Trans. on Information Theory.1999, 45(5):1456-[3]Vielmon Antony, Li Ye, Barry J R. Performance of Alamouti transmit diversity over time-varying Rayleigh-fading channels[J].IEEE Trans. on Wireless Communications.2004, 3(5):1369-[4]Jafarkhani Hamid. A quasi-orthogonal space-time block code[J].IEEE Trans. on Communications.2001, 49(1):1-[5]Hottinen Ari, Tirkkonen Olav. A Randomization Technique for Non-Orthogonal Space-Time Block Codes. IEEE Vehicular Technology Conference, 2001 Spring. Greece, 6-9 May, 2001, 2: 1479.1482.[6]Tirkkonen Olav, Hottinen Ari. Tradeoffs between rate, puncturing and orthogonality in space-time block codes. IEEE International Conference on Communications, 2001, the Netherlands, 30 June -3 July, 2001, 4: 1117.1121.[7]Damen M O, Abed-Meraim K, Belfiore J C. Transmit diversity using rotated constellations with hadamard transform. IEEE Adaptive Systems for Signal Processing, Communications, and Control Symposium 2000, Canada,1-4 Oct., 2000: 396.401.[8]Sharma Naresh, Papadias Constantinos B. Improved quasi-orthogonal codes through constellation rotation[J].IEEE Trans. on Communications.2003, 51(3):332-[9]Su Weifeng, Xia Xiang-Gen. Signal constellations for quasi-orthogonal space-time block codes with full diversity[J].IEEE Trans. on Information Theory.2004, 50(10):2331-[10]Sezgin A, Jorswieck E A. On optimal constellations for quasi-orthogonal space-time codes. IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP'2003, Hong Kong, April 6-10, 2003, 4: 345.348.[11]Larsson Erik G. Improving the frame-error-rate of spatial multiplexing in block fading by randomly rotating the signal constellation[J].IEEE Communications Letters.2004, 8(8):514-[12]Xin Yan, Wang Zhengdao, Giannakis, G B. Space-time diversity systems based on linear constellation precoding[J].IEEE Trans. on Wireless Communications.2003, 2(2):294-[13]Jia Hou, Moon Ho Lee, Ju Yong Park. Matrices analysis of quasi-orthogonal space-time block codes[J].IEEE Communications Letters.2003, 7(8):385-[14]Tirkkonen O, Boariu A, Hottinen A. Minimal nonorthogonality rate one space time block codes for 3+ Tx antennas. Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on, USA, 6-8 Sept., 2000, 2: 429.432.[15]Marzetta Thomas L, Hochwald Bertrand M. Capacity of a mobile multiple-antenna communication link in Rayleigh flat fading[J].IEEE Trans. on Information Theory.1999, 45(1):139-
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出版歷程
  • 收稿日期:  2004-12-27
  • 修回日期:  2005-05-23
  • 刊出日期:  2006-09-19

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