A Study on Adaptive Pilot Beacon for Hard Handoff at CDMA Communication Network 


Vol. 30,  No. 10, pp. 922-929, Oct.  2005


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  Abstract

This paper proposes an adaptive pilot beacon equipment for mobile communication systems based on direct spread spectrum technology which generates the pilot channel for handoff between base stations by using the information acquired from the downstream wireless signal regarding the overhead channel information. Such an adaptive pilot beacon equipment will enable low power operation since among the wireless signals, only the pilot channel will be generated and transmitted. The pilot channel in the downstream link of the CDMA receiver is used to acquire time and frequency synchronization and this is used to calibrate the offset for the beacon, which implies that time synchronization using GPS is not required and any location where forward receive signal can be received can be used as the installation site. The downstream link pilot signal searching within the CDMA receiver is performed by FPGA and DSP. The FPGA is used to perform the initial synchronization for the pilot searcher and DSP is used to perform the offset correction between beacon clock and base station clock. The CDMA transmitter the adaptive pilot beacon equipment will use the timing offset information in the pilot channel acquired from the CDMA receiver and generate the downstream link pilot signal synchronized to the base station. The intermediate frequency signal is passed through the FIR filter and subsequently upconverted and amplified before being radiated through the antenna.

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  Cite this article

[IEEE Style]

K. H. Jeong, D. H. Hong, W. P. Hong, K. H. Ra, "A Study on Adaptive Pilot Beacon for Hard Handoff at CDMA Communication Network," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 922-929, 2005. DOI: .

[ACM Style]

Ki Hyeok Jeong, Dong Ho Hong, Wan Pyo Hong, and Keuk Hwan Ra. 2005. A Study on Adaptive Pilot Beacon for Hard Handoff at CDMA Communication Network. The Journal of Korean Institute of Communications and Information Sciences, 30, 10, (2005), 922-929. DOI: .

[KICS Style]

Ki Hyeok Jeong, Dong Ho Hong, Wan Pyo Hong, Keuk Hwan Ra, "A Study on Adaptive Pilot Beacon for Hard Handoff at CDMA Communication Network," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 922-929, 10. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880