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In this work, we study the eigen-structure of the data covariance matrix in an asynchronous CDMA system. Our results reveal the joint effect of spreading codes and power control on warp converging Wiener filters. We further provide suggestions on spreading code selection and power control strategy in CDMA system design, where stable and predictable early convergence of the reduced-rank conjugate gradient...
This paper proposes a CDMA-based wireless intelligent control system solutions. Using the SMS services and packet data services provided by CDMA network, through the DTGS-800 modem realize the wireless transmission of data, complete real-time monitoring of distribution systems, lighting systems, electrical equipment operating status of the buildings.
This work studies the performance of a data-driven reduced rank scheme for rapid timing acquisition in multiple access communications. Our results show that when only a limited amount of preamble bits are available, instead of the true second-order statistics (SOS), the reduced rank scheme provides reliable timing information. Exploiting the structure of the multiple access interference, the data...
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