Reduced-complexity digital satellite CDMA systems robust to doppler

Mehmet R. Yuce, Wentai Liu

研究成果: Conference article同行評審

1 引文 斯高帕斯(Scopus)


This paper presents two digital satellite CDMA systems which are invariant to Doppler shift. Their performances in a subsampling front-end with a 1-bit A/D converter are evaluated by both theoretical analyses and simulations. The subsampling is done after the received signal is downconverted to an intermediate frequency (i.e IF subsampling). Both systems are based on PSK DS/CDMA communication and do not require either an extra circuit or a pilot transmission for frequency tracking. The use of 1-bit A/D at front-end allows large power consuming circutries such as Automatic Gain Control (AGC), Phase-Lock Loop (PLL) and mixer be eliminated or simply replaced with digital ones. Hardware realizations of each ststem model are also discussed. After the 1-bit A/D converter, the whole sytem inculding the PN code synchronization, the carrier syncronization and timing syncronization can be implemented digitally with the use of application specific integrated circuit (ASIC) technology.

頁(從 - 到)2736-2740
期刊IEEE Vehicular Technology Conference
出版狀態Published - 2003
事件2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall - Orlando, FL, United States
持續時間: 2003 10月 62003 10月 9

All Science Journal Classification (ASJC) codes

  • 電腦科學應用
  • 電氣與電子工程
  • 應用數學


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