Alternative Zigbee codes derived from orthogonal perfect DFT sequences

Author

Pereira, João S. ; da Silva, Henrique J A

Author_Institution

Inst. de Telecomun., Coimbra, Portugal

fYear

2010

fDate

15-19 Dec. 2010

Firstpage

1

Lastpage

6

Abstract

The performance of a code-division multiple access (CDMA) system is directly related with the choice of adequate codes. The codes for use in CDMA communication systems should have a perfect aperiodic (or periodic) autocorrelation function and should be orthogonal to each other at all time shifts. A mathematical property that provides a way to find large sets of real perfect DFT (discrete Fourier transform) sequences is presented. These sequences can be transformed into real orthogonal perfect DFT sequences and also into bipolar codes that have better properties than the codes used in the Zigbee communication system. These new bipolar codes are approximately orthogonal and have nearly optimum periodic and aperiodic autocorrelation functions. We also evaluate our bipolar codes with an improved error probability model.

Keywords

Zigbee; code division multiple access; discrete Fourier transforms; orthogonal codes; CDMA communication system; Zigbee code; bipolar code; code division multiple access; discrete Fourier transform; error probability model; orthogonal perfect DFT sequence; Approximation methods; Correlation; Discrete Fourier transforms; Gold; Multiaccess communication; OFDM; Zigbee; CDMA; OFDM; Orthogonal Codes; Real Perfect DFT Sequences; Zigbee;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communication and Sensor Networks (WCSN), 2010 Sixth International Conference on

Conference_Location

Allahabad

Print_ISBN

978-1-4244-9731-7

Type

conf

DOI

10.1109/WCSN.2010.5712292

Filename

5712292