BER-Optimized Precoders for OFDM Systems With Insufficient Cyclic Prefix

被引：14

作者：

Bedi, Amrit S. ^{[1
]}

Akhtar, Javed ^{[1
]}

Rajawat, Ketan ^{[1
]}

Jagannatham, Aditya K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India

来源：

IEEE COMMUNICATIONS LETTERS | 2016年 / 20卷 / 02期

关键词：

OFDM; insufficient cyclic prefix; interference alignment; precoding with limited feedback; INTERFERENCE ALIGNMENT; DESIGN;

D O I：

10.1109/LCOMM.2015.2506158

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This letter considers precoder design for orthogonal frequency division multiplexing (OFDM) systems with insufficient cyclic prefix (CP). Interference alignment is utilized to formulate the precoder design problem as a bit error rate (BER) minimization problem subject to a total power constraint. Subsequently, a novel closed-form solution is derived for the optimal precoder by exploiting Schur convexity and interference alignment-based interblock interference (IBI) suppression. The resulting precoder is also shown to be mean-square-error (MSE) optimal, and generalizes the existing designs. Closed-form expressions are also developed for quantifying the signal-to-noise ratio (SNR) gain of the proposed design over existing designs for practical channels with a decaying power-delay profile. Simulation results corroborate the performance improvements over existing MSE optimal designs considering the availability of both full and partial channel state information at the transmitter (CSIT) for various power delay profiles.

引用

页码：280 / 283

页数：4

共 12 条

[1] Interference alignment and degrees of freedom of the K-user interference channel [J].

Cadambe, Viveck R. ;

Jafar, Syed Ali .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2008, 54 (08) :3425-3441

[2] Asymptotically minimum bit error rate block precoders for minimum mean square error equalization [J].

Chan, SS ;

Davidson, TN ;

Wong, KM .

SAM2002: IEEE SENSOR ARRAY AND MULTICHANNEL SIGNAL PROCESSING WORKSHOP PROCEEDINGS, 2002, :140-144

[3]

Cheong KW, 1998, ICC 98 - 1998 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS VOLS 1-3, P339, DOI 10.1109/ICC.1998.682865

[4] OFDM and Its Wireless Applications: A Survey [J].

Hwang, Taewon ;

Yang, Chenyang ;

Wu, Gang ;

Li, Shaoqian ;

Li, Geoffrey Ye .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2009, 58 (04) :1673-1694

[5]

Jin YS, 2012, IEEE GLOB COMM CONF, P3778, DOI 10.1109/GLOCOM.2012.6503705

[6] An Interference Nulling Based Channel Independent Precoding for MIMO-OFDM Systems with Insufficient Cyclic Prefix [J].

Jin, Yuansheng ;

Xia, Xiang-Gen .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2013, 61 (01) :131-143

[7]

Lin Y.P., 2010, Filter Bank Transceivers for OFDM and DMT Systems

[8] MIMO Transceiver Design via Majorization Theory [J].

Palomar, Daniel P. ;

Jiang, Yi .

FOUNDATIONS AND TRENDS IN COMMUNICATIONS AND INFORMATION THEORY, 2006, 3 (4-5) :331-551

[9] Efficient DMT/OFDM transmission with insufficient cyclic prefix [J].

Park, CJ ;

Im, GH .

IEEE COMMUNICATIONS LETTERS, 2004, 8 (09) :576-578

[10]

Sayed A.H., 2008, Adaptive Filters

← 1 2 →