Antipodal paraunitary matrices and their application to OFDM systems

被引：20
|
作者：
Phoong, SM [1 ]
Chang, KY
机构：
[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan
[2] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 10764, Taiwan
来源：
IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2005年 / 53卷 / 04期
关键词：
antipodal paraunitary matrices; filterbanks; OFDM;
D O I：
10.1109/TSP.2005.843735
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：
Paraunitary (PU) matrices and filterbanks have played an important role in many applications. This paper studies a special class of PU matrices, called antipodal paraunitary (APU) matrices. APU matrices are PU matrices whose coefficient matrices consist of 1 only. Several new methods will be introduced for the construction of APU matrices. In particular, a new method based on the butterfly structure that has a low cost implementation is proposed. Moreover, one application of APU matrices in precoded orthogonal frequency division multiplexing (OFDM) systems will be considered. By using an APU precoding matrix, the complexity will be very low, and experiments show that the use of APU matrices can greatly enhance the performance.
引用
收藏
页码：1374 / 1386
页数：13
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