A CMA equalization system in frequency domain

Author

Kong, Yuan-yuan

Author_Institution

Nanjing Univ. of Posts & Telecommun., Nanjing, China

fYear

2010

fDate

11-14 Nov. 2010

Firstpage

358

Lastpage

360

Abstract

CMA is an important equalization algorithm. CMA equalization in frequency domain is also worth studying. According to the work before, CMA was always used in the time domain but never in the frequency domain, because CMA requires that the input signal has a constant modulus feature, which is easy to achieve in the time domain but difficult in the frequency domain. A scheme is proposed in the paper, which makes use of CAZAC sequence as spreading code to implement the frequency domain equalization using CMA. We built CMA equalization system in frequency domain based on CP-CDMA using CAZAC sequence as Spreading Code. The simulation results show that this scheme has a very good performance and is suitable for Direct Sequence Spreading System (DSSS) with small Spreading Factor (SF) to achieve high speed symbol rate.

Keywords

code division multiple access; equalisers; sequences; spread spectrum communication; CAZAC sequence; CMA equalization; CP-CDMA; constant modulus feature; direct sequence spreading system; frequency domain equalization; spreading code; spreading factor; Receivers; CAZAC; CMA; CP-CDMA; Frequency Domain Equalization;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Technology (ICCT), 2010 12th IEEE International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6868-3

Type

conf

DOI

10.1109/ICCT.2010.5689155

Filename

5689155