Multicode MIMO Systems With Quaternary LCZ and ZCZ Sequences

Author

Yang, Jae-Dong ; Jin, Xianglan ; Song, Kyoung-Young ; No, Jong-Seon ; Shin, Dong-Joon

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul

Volume

57

Issue

4

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

2334

Lastpage

2341

Abstract

In this paper, we propose multicode multiple-input-multiple-output (MIMO) systems with quaternary low-correlation zone (LCZ) and zero-correlation zone (ZCZ) sequences as spreading codes. Quaternary LCZ and ZCZ sequences have very low correlation values when the time shifts between these sequences are within the predetermined correlation zone, and thus, the multiuser or multipath interference can be substantially reduced when the delay is within a few chips. The bit error probability of the proposed systems is theoretically analyzed, which is numerically confirmed. It is also numerically shown that the performance of the multicode MIMO systems with quaternary LCZ and ZCZ sequences is better than that of the conventional multicode MIMO systems with quaternary spreading codes constructed from pairs of binary Hadamard codes.

Keywords

Hadamard codes; MIMO communication; binary codes; correlation methods; error statistics; radiofrequency interference; binary Hadamard code; bit error probability; low-correlation zone sequence; multicode MIMO system; multipath interference; multiuser interference; quaternary spreading code; zero-correlation zone sequence; Hadamard codes; low correlation zone (LCZ) sequences; low-correlation zone (LCZ) sequences; multicode multiple-input multiple-output (MIMO); wireless local area network (WLAN); zero correlation zone (ZCZ) sequences; zero-correlation zone (ZCZ) sequences;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2007.914059

Filename

4400121