交织码分与频分复用上行链路中采样时钟偏差影响及补偿

doi:10.11959/j.issn.1000-436x.2015195

Abstract

Abstract:

To achieve the sample clock synchronization in the interleaved code and frequency division multiple access(I-CFDMA)uplink,the I-CFDMA uplink model was established,and the disturbance of the sample clock offset(SCO)on the system model was discussed,in addition,the signal time shift,phase rotation,multi-user interference(MUI)and inter-carrier interference(ICI)caused by SCO were analyzed quantitatively.On this basis,a compensation method of multi-user SCO was proposed.For one thing,the relevant metric function was modified considering the SCO of each user; for another thing,a multi-user detection(MUD)algorithm based on harmony search was proposed.This algorithm has a higher efficiency than the commonly-used genetic algorithm(GA),as well as a performance approximate to that of optimal detection without SCO but with $\frac{1}{64}$ computational burden.The computer simulation results validate the conclusions obtained.

Key words: SC-FDMA, sample clock offset, multi-user detection, harmony search

Dan DING,Nai-ping CHENG,Yu-rong LIAO. Impact and compensation of sample clock offset in I-CFDMA uplink[J]. Journal on Communications, 2015, 36(10): 181-187.

Figures/Tables 4

References 18

[1]	MYUNG H G , GOODMAN D J . Single Carrier FDMA,a New Air Interface for Long Term Evolution[M]. John Wiley ＆ Sons,Ltd, 2008. 55-56.
[2]	WU P R , ROBERT S , VIJAY K B . Optimal power allocation for wideband cognitive radio networks employing SC-FDMA[J]. IEEE Communications Letters, 2013,17(4): 669-672.
[3]	DECHENE D J , SHAMI A . Energy-aware resource allocation strategies for LTE uplink with synchronous HARQ constraints[J]. IEEE Transactions on Mobile Computing, 2014,13(2): 422-433.
[4]	SESIA S , TOUFIK I , BAKER M . LTE-The UMTS Long Term Evolution From Theory to Practice[M]. Wiely, 2010.
[5]	杨丽花, 杨龙祥, 朱洪波 . LTE上行多用户SC-FDMA系统中时变信道估计方法[J]. 通信学报, 2014,35(9): 91-98. YANG L H , YANG L X , ZHU H B . Time-varying channel estimation for LTE uplink SC-FDMA system with multi-user[J]. Journal on Communications, 2014,35(9): 91-98.
[6]	KORZHYK D ， YIN Z ， MYUNG H G ，et al. Hybrid subcarrier mapping method and system[J]. United States,US 2013/0010703 A1， 2013.
[7]	PAUL A , JOSE I . UWB modulation scheme “SC-CFDMA” for multi-user communications[A]. Proceedings of 11th IRAJ International Conference[C]. 2014. 34-37.
[8]	CHEN C , YUN C ,et al. Accurate sampling timing acquisition for baseband OFDM power-line communication in non-Gaussian noise[J]. IEEE Transactions on Communications, 2014,61(4): 1608-1620.
[9]	HYUNBEOM L , JUNGWOO L . Joint clock and frequency synchronization for OFDM-based cellular systems[J]. IEEE Signal Processing Letters, 2011,18(12): 757-760.
[10]	WEIKERT O . Joint estimation of carrier and sampling frequency offset,phase noise,IQ offset and MIMO channel for LTE Advanced UL MIMO[A]. IEEE 14th Workshop on Signal Processing Advances in Wireless Communications(SPAWC)[C]. 2013.
[11]	罗长川, 罗涛, 乐光新 . 多载波宽带无线通信技术[M]. 北京: 北京邮电大学出版社, 2004. LUO C C , LUO T , YUE G X . Multi-Carrier Wide-Band Wireless Communication Technology[M]. Beijing: Beijing University of Posts and Tele Communications PressPress, 2004.
[12]	PROAKIS J G , SALEHI M . 数字通信[M]. 北京: 电子工业出版社, 2011. PROAKS J G , SALEH M . Digital Telecomm Communication[M]. Beijing: Publishing House of Electronics IndustryPress, 2011.
[13]	王颖, 杨义先, 钮心忻 ,等. 基于控制流序位比对的智能Fuzzing测试方法[J]. 通信学报, 2013,34(4): 114-121. WANG Y , YANG Y X , NIU X X ,et al. Smart Fuzzing method based on comparison algorithm of control flow sequences[J]. Journal on Communications, 2013,34(4): 114-121.
[14]	江逸茗, 兰巨龙, 周慧琴 . 网络虚拟化环境下的资源监控策略[J]. 电子与信息学报, 2014,36(3): 708-714. JIANG Y M , LAN J L , ZHOU H Q . Resource monitoring policy for network virtualization environment[J]. Journal of Electronics ＆ Information Technology, 2014,36(3): 708-714.
[15]	GEEM Z W , KIM J H , LOGANATHAN G V . A new heuristic optimization algorithm:harmony search[J]. Simulation, 2001,76(2): 60-68.
[16]	HOANG D C , YADAV P , KUMAR R ,et al. Real-time implementation of a harmony search algorithm-based clustering protocol for Energy-efficient wireless sensor networks[J]. IEEE Transactions on Industrial Informatics, 2014,10(1): 774-783.
[17]	NEKOOEI K , FARSANGI M M ,et al. An improved multi-objective harmony search for optimal placement of DGs in distribution systems[J]. IEEE Transactions on Smart Grid, 2013,4(1): 557-567.
[18]	路静, 顾军华 . 改进和声搜索算法及其在连续函数优化中的应用[J]. 计算机应用, 2014,34(1): 194-198. LU J , GU J H . Continuous function optimization based on improved harmony search algorithm[J]. Journal of Computer Applications, 2014,34(1): 194-198.

Metrics

Recommended 0

No Suggested Reading articles found!

Impact and compensation of sample clock offset in I-CFDMA uplink

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 4

References 18

Related Articles 8

Metrics

Recommended 0

[1]	Yong LIAO, Zhirong CAI. Basis expansion model-based improved regularized orthogonal matching pursuit channel estimation for V2X fast time-varying SC-FDMA [J]. Journal on Communications, 2021, 42(4): 177-184.
[2]	Cuitao ZHU,Ning WEI,Hanxin WANG,Zhongjie LI. Multi-user detection scheme for SCMA systems based on iteration removal [J]. Journal on Communications, 2018, 39(6): 64-72.
[3]	Dan DING,Nai-ping CHENG,Yu-rong LIAO. SC-CFDMA uplink symbol synchronization method based on multi-rate satellite-ground loop [J]. Journal on Communications, 2015, 36(Z1): 181-187.
[4]	Li-hua YANG,Long-xiang YANG,Hong-bo ZHU. Time-varying channel estimation for LTE uplink SC-FDMA system with multi-user [J]. Journal on Communications, 2014, 35(9): 91-98.
[5]	. Non-orthogonal multiple-access system SC-FDMA-IDMA with iterative block equalization [J]. Journal on Communications, 2014, 35(8): 7-55.
[6]	De-liang LIU,Qiang HUANG,Da-zhuan XU. Non-orthogonal multiple-access system SC-FDMA-IDMA with iterative block equalization [J]. Journal on Communications, 2014, 35(8): 48-55.
[7]	Ya-tong ZHOU,Tai-yi ZHANG,Hai-yuan LIU. Kernel-based machine learning method and the applications to multi-user detection:a survey [J]. Journal on Communications, 2005, 26(7): 96-108.
[8]	Yao-hua XU,Yan-jun HU,Yuan-yuan ZHANG. Discrete particle swarm optimization algorithm for multi-user detection in CDMA communication system [J]. Journal on Communications, 2005, 26(7): 109-114.