Pulse construction in OFDM systems via convex optimization

被引：2

作者：

Xu, Jiadong ^{[1
]}

Strohmer, Thomas ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Math, Davis, CA 95616 USA

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2008年 / 56卷 / 08期

基金：

美国国家科学基金会;

关键词：

frequency offset; inter-carrier interference (ICI); pulse-shaping; Orthogonal Frequency Division Multiplexing (OFDM); optimal pulse; convex optimization;

D O I：

10.1109/TCOMM.2008.050643

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to reduce the inter-carrier interference (ICI) produced by frequency offset in OFDM systems, we set up an optimization problem to find the transmission pulse which maximizes the signal-to-average-ICI power ratio. Furthermore, by solving a constrained convex optimization problem, our pulses can satisfy various decay requirements, for instance with respect to a prescribed spectral mask. The latter is an important feature in order to comply with industry standard specifications. Furthermore we discuss issues concerning the numerical treatment of the constrained convex optimization problem. Simulation results show that our pulses outperform many currently known transmission pulses with respect to the ICI criterion.

引用

页码：1225 / 1230

页数：6

共 13 条

[1] Generalized raised-cosine filters [J].