A generalization of multidimensional modulation

Author

Sari, Hikmet

Author_Institution

Soc. Anonyme de Telecommun., Paris, France

Volume

2

fYear

1995

fDate

18-22 Jun 1995

Firstpage

683

Abstract

The paper presents a generalization of multidimensional modulation to all dimensions that are an integer power of 2. Minimum-bandwidth transfer functions are constructed using binary orthogonal Walsh-Hadamard sequences. The author also presents a time-domain approach which consists of using Walsh-Hadamard sequences as spreading and despreading sequences and discusses its relationship with conventional direct sequence code-division multiple access (DS/CDMA). It is pointed out that multidimensional modulation systems essentially have the same performance and bandwidth efficiency as conventional 2-D systems

Keywords

Hadamard matrices; binary sequences; code division multiple access; quadrature amplitude modulation; sequences; time-domain analysis; transfer function matrices; 2-D systems; DS/CDMA; bandwidth efficiency; binary orthogonal Walsh-Hadamard sequences; despreading sequences; direct sequence code-division multiple access; generalization; minimum-bandwidth transfer functions; multidimensional modulation; performance; spreading sequences; time-domain approach; Additive white noise; Bandwidth; Bit rate; Constellation diagram; Costs; Filters; Multidimensional systems; Phase modulation; Quadrature phase shift keying; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2486-2

Type

conf

DOI

10.1109/ICC.1995.524191

Filename

524191