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- Title
System study on direct sequence spectrum of radio-frequency identification.
- Authors
Jiang, Daoping; Mei, Niansong; Liu, Demeng; Zhang, Zhaofeng
- Abstract
This paper considers points of secure and anti-collision of the Radio-frequency identification (RFID) technology. Source symbols are represented by a special coding, termed Minimum Energy (ME) coding, which exploits redundant bits for saving power when transmitted via RF links with On-Off Keying (OOK). This ME coding is applied to Direct Sequence Spread Spectrum (DSSS) RFID tag in order to enhance security as well as to reduce collision. This synchronized DSSS RFID system is designed and simulation is conducted to verify the advantage of DSSS RFID and present the power efficiency enhance 4 dB, quantities are taken at Bit Error Rate (BER) of 10e-4. When the channel uses the ME coding combined with a DSSS code and OOK without FM0 encoding as is disclosed in the EPC-C1G2/ISO 18000-6 Type C standard. Finally, the maximum number of users in this Direct-Sequence Code Division Multiple Access (DS-CDMA) RFID system is calculated under the condition of successfully acquired.
- Subjects
RADIO frequency identification systems; DIRECT sequence spectrum spread (Telecommunications); IMPACT (Mechanics); CODE division multiple access; INTERNET
- Publication
Journal of Communications Technology & Electronics, 2014, Vol 59, Issue 11, p1200
- ISSN
1064-2269
- Publication type
Article
- DOI
10.1134/S1064226914110047