Williamson–Hadamard spreading sequences for DS‐CDMA applications | Zendy

Seberry Jennifer | Zendy; Wysocki Beata J. | Zendy; Wysocki Tadeusz A. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Williamson–Hadamard spreading sequences for DS‐CDMA applications

Author(s) -

Seberry Jennifer,

Wysocki Beata J.,

Wysocki Tadeusz A.

Publication year - 2003

Publication title -

wireless communications and mobile computing

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.42

H-Index - 64

eISSN - 1530-8677

pISSN - 1530-8669

DOI - 10.1002/wcm.143

Subject(s) - hadamard transform , code division multiple access , aperiodic graph , sequence (biology) , diagonal , spread spectrum , computer science , hadamard code , algorithm , integer (computer science) , code (set theory) , mathematics , telecommunications , combinatorics , geometry , genetics , mathematical analysis , set (abstract data type) , biology , programming language

Orthogonal bipolar spreading sequences are used in direct sequence code division multiple access (DS‐CDMA) systems for both spectrum spreading and channel separation. The most commonly used sequences are Walsh–Hadamard sequences of lengths being an integer power of 2. A construction based on Williamson's arrays leading to sequences of lengths N ≡4 (mod 8) is presented in the paper. Aperiodic correlation characteristics, for example sequence sets of lengths 12–252 are presented. The correlation properties of the sequence sets are later improved using a diagonal modification technique. Copyright © 2003 John Wiley & Sons, Ltd.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research