全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

MSEOFDM:一种基于分组的OFDM宽带通信系统

, PP. 7-14

Keywords: OFDM,PAPR,频带利用率,频域均衡,符号间干扰,信道间干扰

Full-Text   Cite this paper   Add to My Lib

Abstract:

本文对传统OFDM和多符号封装(MSE)-OFDM进行了系统比较.分析了频率偏移对系统性能的影响.比较在2种不同的假设下进行,即或者保持MSE-OFDM的符号长度(即子载波数)不变以提高频带利用率,或者保持频带利用率(CP与数据有效传输时间之比)不变以改善系统对抗同步误差,即频率偏差的能力.在第一种降CP的MSE-OFDM情形下,由于减少了OFDM符号之间插入的CP数,频带利用率得以提高;对于后一种降FFT长度的MSE-OFDM情形,更少的子载波数显著改善了对同步误差的抵抗能力.本文提出的系统尤其适合于固定无线系统和数字用户环路(DSL).在这些应用中,由于信道环境的静止特性,可以使用很大的帧长度.文中还讨论了MSEOFDM系统的复杂度.

References

[1]  Bennett C H, Brassard G. Quantum cryptography and its application toprovably secure key expansion, public-key distribution, and coin-tossing[A].IEEE International Symposium on Information Theory[C]. St-Jovite: Qebec Press, 1983. 91-95.
[2]  Bennett C H, Brassard G. Quantum cryptography: public-key distribution and coin tossing[A]. Proceedings of the International Conference on Computers, Systems and Signal Processing[C]. India: Bangalore Press, 1984. 175-179.
[3]  Ekert A K. Quantum cryptography based on Bell's theorem[J]. Phys Rev Lett, 1991, 67: 661-663.
[4]  Bennett C H. Quantum cryptography using any two nonorthogonal states[J]. Phys Rev Lett, 1992, 68: 3 121-3 124.
[5]  Lütkenhaus N. Estimates for practical quantum cryptography[J]. Phys Rev A, 1999, 59: 3 301-3 319.
[6]  Brassard G, Lütkenhaus N, Mor T, et al. Security aspects of practical quantum cryptography[DB/OL].
[7]   MELSA P J W, YOUN CE R C, ROHRS C F L. Impulse respo nse sho r tening fo r discrete multito netransceiv e rs [J]. IEEE Tr ans Commun, 1996, 44: 1662-1672.
[8]   PAL D, IYENGAR G N, CIOFFI J M. A new method of channel shor tening w ith a pplicatio ns to discrete multi tone ( DM T) systems [A]. In Pro c IEEE Int Co nf Communica tions, ICC [C]. Atlanta: GA,1998.
[9]  Dusek M, Haderka O, Hendrych M, et al. Quantum identificationsystem[J]. Phys Rev A, 1999, 60: 149-156.
[10]   W ANG Xianbin, WU Yiy an, CHOUIN ARD J-Y. On the comparison betw een co nv entio nal o fdm and m se-ofdm systems [A]. GLOBECOM′03[C]. 2003, 1: 1-5, 35-39.
[11]   WN AG Xia nbin, T JHUN G T T, WU Yiyan, Bernard Caro n. SER perfo rmance ev alua tio n and o ptimiza tio n of OFDM sy stem w ith residual frequency a nd timing offsets from imperfect synch ro niza tio n
[12]  [J] IEEE Tra nsactio ns o n Br oadcasting , 2003, 49( 2): 170-177.
[13]   Joh n Pro akis. Digital communica tio ns [M]. McGraw Hill, 1995.
[14]  Zeng G, Zhang W. Identity verification in quantum key distribution[J]. Phys Rev A, 2000, 61: 022303.
[15]   El-Tana ny M, W U Y, HAZY L. Analy tical modeling and simula tio n o f pha se noise inte rfere nce in O FDM-based dig ital telev ision ter restrial bro adcasting sy stems [J]. IEEE Transactio ns o n Broadcasting , 2001, 47( 1): 20-31.
[16]   CHIN I A, W U Y, El-Ta na ny M. M AHMOUND S. Har dw ar e no n-linearities in digital TV broadcasting using OFDM modulation [J]. IEEE Transa ctio ns o n Bro adcasting , 1998, 44( 1): 12-21.
[17]  Liunggren D, Bourennane M, Karlsson A. Authority-based user authentication in quantum key distribution[J]. Phys Rev A, 2000, 62: 022305.
[18]  Lütkenhaus N. Security against eavesdropping in quantum cryptography[J]. Phys Rev A, 1996, 54: 97-111.
[19]  W EINS TEIN S B, EBERT P M. Data tr ansmission by f requency div isio n multiplex ing using th e discrete fourier transfo rm [J]. IEEE Trans Commun, 1971, COM-19: 628-634.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133