NDLI: A New Walsh-Like Near Orthogonal (WNO) Sequence for Asynchronous CDMA System

Content Provider	Springer Nature Link
Author	Chakraborty, Debolina Tarafder, Milan Kumar Chandra, Abhijit
Copyright Year	2016
Abstract	Present generation mobile communication system employs one of the most popular wireless access technologies called code division multiple access (CDMA). Design of CDMA spreading codes has drawn significant attention amongst the researchers over the last few decades. CDMA code family is generally categorized into purely orthogonal and non-orthogonal (near-orthogonal) members which have established their application in synchronous (downlink) and asynchronous (uplink) CDMA system respectively. Walsh code has been regarded as the most useful spreading code to be used in synchronous link because of its orthogonality property. However, the performance of Walsh code is significantly inferior in asynchronous surroundings. A number of codes have consequently been proposed with an aim to mitigate the shortcomings of Walsh code. This paper makes an innovative attempt to enhance the correlation properties of existing Walsh code through one simple yet powerful algorithm. Proposed code of length ‘N’ has been generated from code sets of length ‘N/4’ and thus makes the code generation algorithm recursive in nature. Performance of the proposed code has subsequently been compared with some existing orthogonal and semi orthogonal codes in terms of various performance metrics and finally the supremacy of our proposition has been established.
Starting Page	711
Ending Page	729
Page Count	19
File Format	PDF
ISSN	09296212
Journal	Wireless Personal Communications
Volume Number	88
Issue Number	4
e-ISSN	1572834X
Language	English
Publisher	Springer US
Publisher Date	2016-02-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Auto correlation function (ACF) Cross correlation function (CCF) Code division multiple access (CDMA) Mean square correlation measure Walsh–Hadamard code Walsh-like Near Orthogonal (WNO) code Communications Engineering, Networks Signal, Image and Speech Processing Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The MAI performance of orthogonal codes for channel cover in Asynchronous CDMA system

Modified Walsh Hadamard sequences for DS-CDMA wireless systems (2002)

Performance Evaluation of Correlation Properties of Quasi Orthogonal Prime Codes for Optical CDMA Communication

On pseudo-random and orthogonal binary spreading sequences.

Design of ds-cdma transmitter and receiver using tms320c6713 dsk.

Improving quality of security for CDMA using Orthogonal coding method

On pseudo-random and orthogonal binary spreading sequences,” Int (2007)

Spectral Sidelobe Decaying Property of Walsh-Hadamard Code in MC-CDMA Systems

Walsh-like Nonlinear Phase Orthogonal Transforms for CDMA Communications

A New Walsh-Like Near Orthogonal (WNO) Sequence for Asynchronous CDMA System

Similar Documents

The MAI performance of orthogonal codes for channel cover in Asynchronous CDMA system

Modified Walsh Hadamard sequences for DS-CDMA wireless systems (2002)

Performance Evaluation of Correlation Properties of Quasi Orthogonal Prime Codes for Optical CDMA Communication

On pseudo-random and orthogonal binary spreading sequences.

Design of ds-cdma transmitter and receiver using tms320c6713 dsk.

Improving quality of security for CDMA using Orthogonal coding method

On pseudo-random and orthogonal binary spreading sequences,” Int (2007)

Spectral Sidelobe Decaying Property of Walsh-Hadamard Code in MC-CDMA Systems

Walsh-like Nonlinear Phase Orthogonal Transforms for CDMA Communications

A New Walsh-Like Near Orthogonal (WNO) Sequence for Asynchronous CDMA System