Extended orthogonal code designs with applications in CDMA

Author

Gerakoulis, Diakoumis ; Ghassemzadeh, Saeed

Author_Institution

AT&T Labs-Res., Florham Park, NJ, USA

Volume

2

fYear

2000

fDate

2000

Firstpage

657

Abstract

Methods of generating orthogonal codes are presented and applied in CDMA systems. These methods are used in the constructing of codes of all possible lengths up to 256. We also present orthogonal codes generated by Kronecker matrix products, called extended orthogonal codes which are used in concatenating orthogonal sequences. This approach allows individual users as well as groups of users (forming microcells, cell-sectors or beams), to be separated orthogonally. In addition, we examine complex, polyphase and other orthogonal code designs

Keywords

Hadamard matrices; binary codes; code division multiple access; concatenated codes; matrix multiplication; sequences; CDMA; Hadamard matrices; Kronecker matrix products; PN sequences; RFI; beams; binary orthogonal codes; cell-sectors; code lengths; complex orthogonal codes; extended orthogonal code designs; microcells; orthogonal code generation; orthogonal sequences concatenation; polyphase orthogonal codes; Autocorrelation; Binary codes; Binary sequences; Bit rate; Books; Frequency synchronization; Microcell networks; Multiaccess communication; Power generation; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on

Conference_Location

Parsippany, NJ

Print_ISBN

0-7803-6560-7

Type

conf

DOI

10.1109/ISSSTA.2000.876515

Filename

876515