DCT-SVD Based Channel Estimation Technique in IEEE 802.16e DL-PUSC System

被引：0

作者：

Desai, Mehul V. ^{[1
]}

Gupta, Shilpi ^{[2
]}

Dalal, Upena D. ^{[2
]}

机构：

[1] NGPP, Elect & Commun Engn Dept, Bardoli Surat 394620, Gujarat, India

[2] SVNIT, Elect Engn Dept, Surat 395007, India

来源：

PROCEEDINGS ON 2014 2ND INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGY TRENDS IN ELECTRONICS, COMMUNICATION AND NETWORKING (ET2ECN) | 2014年

关键词：

Coded OFDM System (C-OFDM); Channel Estimation; Channel Impulse Response (CIR); Channel Frequency Response (CFR); Downlink Partially Used Sub channelization (DL-PUSC); DCT(Discrete Cosine Transform); ISI(Inter Symbol Interference); LS (Least square Estimation); LMMSE (Linear minimum mean square error); SVD (Singular Value Decomposition);

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Channel estimation is essential in 802.16e based system which supports higher data rate along with higher mobility rate. To combat the ISI and Doppler effect in Mobile WiMAX, MMSE and LMMSE Channel estimators provides effective solution but are much more complex. In this paper, an attempt has been made to apply best suitable, less complex, pilot based channel estimation called Singular Value Decomposition (SVD). The research is carried out from conventional FFT to non-conventional DCT. Performance Comparison of FFT and DCT transform based OFDM has been made for 802.16 DL-PUSC system having Coded-OFDM as a key modulation technique with 3/4 code rate convolution channel coding. In this paper LS, LMMSE and SVD Channel Estimators have been used under ITU-A and ITU-B(Vehicular frequency selective fast fading and pedestrian frequency selective slow fading) environment. DCT-SVD has been proven a good combination for improved BER performance with lowest complexity compared to other combinations

引用

页数：6

共 29 条

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