Interval+communications=Walsh: for signal multiplexing under interval uncertainty, Walsh functions are optimal

Author

Al-Jamal, Rami ; Manoli, Samir ; Brito, Alejandro E. ; Kosheleva, Olga

Author_Institution

Dept. of Electr. & Comput. Eng., Texas Univ., El Paso, TX, USA

Volume

3

fYear

2001

fDate

25-28 July 2001

Firstpage

1677

Abstract

In communications, often, statistical characteristics of the noise vary so much that, in essence, we can only have an interval estimates for this noise. We show that under this interval uncertainty, the optimal multiplexing technique consists of using Walsh functions. This result provides a new theoretical explanation for the success of Walsh-based multiplexing techniques which are actively used in cellular phones and in other types of wireless communication

Keywords

Walsh functions; code division multiple access; multiplexing; CDMA; Code Division Multiple Access; Walsh functions; Walsh-based multiplexing; cellular phones; communications; interval uncertainty; noise; optimal multiplexing technique; signal multiplexing; statistical characteristics; wireless communication; Bandwidth; Cellular phones; Frequency conversion; Frequency division multiplexing; Multiaccess communication; Radio spectrum management; Signal processing; Time division multiplexing; Uncertainty; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

IFSA World Congress and 20th NAFIPS International Conference, 2001. Joint 9th

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-7078-3

Type

conf

DOI

10.1109/NAFIPS.2001.943803

Filename

943803