Multicode CDMA/CI for multimedia services over LEO satellite channel

Author

Kapoor, Ravikant ; Kumar, Pranaw

Author_Institution

Electr. Eng. Dept., Indian Inst. of Technol. Patna, Patna, India

fYear

2014

fDate

24-27 Sept. 2014

Firstpage

301

Lastpage

304

Abstract

Multicode CDMA is a promising scheme to support multirate services for multimedia communication. In this paper, a novel multicode CDMA scheme using Carrier Interferometry (CI) codes has been proposed to support multirate services over LEO satellite channel. It is observed that use of CI codes not only help in mitigating multiple access interference but also reduces the Peak to Average Power Ratio (PAPR) compared to Walsh Hadamard (WH) codes. The percentage of symbols with PAPR greater than 9 dB is reduced from 80% to 10% by employing CI codes for data rate sixteen times the basic data rate. Also, at elevation angle of 30°, high rate user observes as much as 8 dB SNR gain using CI codes. Additionally, orthogonal CI codes with arbitrary integer length can be generated.

Keywords

Hadamard codes; code division multiple access; interference suppression; interferometry; multimedia communication; orthogonal codes; satellite communication; telecommunication services; LEO satellite channel; PAPR reduction; WH codes; Walsh Hadamard codes; arbitrary integer length; carrier interferometry codes; data rate; high rate user; low earth orbit satellite channel; multicode CDMA-CI; multimedia communication; multimedia services; multiple access interference mitigation; multirate services; orthogonal CI codes; peak to average power ratio reduction; Error correction; Error correction codes; Europe; Low earth orbit satellites; Multiaccess communication; Peak to average power ratio; Signal to noise ratio; Carrier Interferometry; DS-CDMA; Interference Mitigation; LEO satellite; Multicode; Multirate; PAPR Reduction; land mobile satellite channel;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Computing, Communications and Informatics (ICACCI, 2014 International Conference on

Conference_Location

New Delhi

Print_ISBN

978-1-4799-3078-4

Type

conf

DOI

10.1109/ICACCI.2014.6968464

Filename

6968464