Estimation of the Pseudorandom Sequence Phase in Spread Spectrum Data-Transmission Systems

The article presents the method for estimating parameters of the spread spectrum data-transmission system based on both the Delay and Multiply Approach algorithm and the algorithm with an autoregressive model of the signal. Characteristics of the Delay and Multiply Approach algorithm were analyzed. Simulation of the approach results in the degradation effect of the pseudorandom sequence correlation if the approach is used for processing the channels of the spread spectrum data transmission systems. The article also presents the results of a hardware-in-the-loop simulation of the approach proposed by the authors for estimating the pseudorandom sequence phase with the help of the Delay and Multiply Approach algorithm while increasing a signal-noise ratio using an iterative algorithm for both autocorrelation function calculation and frequency estimation on the basis of the autoregressive model.

References

[1] Shakhtarin B.I., Sizykh V.V., Sidorkina Yu.A. Sinkhronizatsiya v radiosvyazi i radionavigatsii [Synchronization in Radio Communication and Navigation]. Moscow, Goryachaya liniya-Telekom Publ., 2011.

[2] James Bao Yen Tsui. Fundamentals of global positioning system receivers: a software approach. John Wiley and Sons, 2005.

[3] James B.Y. Tsui, David M. Lin. Acquisition schemes for software GPS receiver. Proceeding of the 11th International Technical Meeting ION GPS-98. September, 1998, pp. 317-325.

[4] Sklyar B. Tsifrovaya svyaz’. Teoreticheskie osnovy i prakticheskoe primenenie [Digital Communication. Theoretical Basis and Practical Application]. Vil’yams, 2003.

[5] Nikiforov A.A. Mel’nikov A.O. Tokarev S.V. Detecting Spread Spectrum Signals Based on the AR Model. Promyshlennye ASU i kontrollery [Industrial Automatic Control Systems and Controllers], 2013, no. 5, pp. 51-54 (in Russ.).

[6] Michele’s GNSS blog Open source Software Defined Radio GPS receiver. URL: http://michelebavaro.blogspot.com/2010/11/open-source-software-defined-radio-gps.html

[7] FTP-сервер FTP directory /pub/materials at rf-lab.org. FTPserver. URL: ftp://rf-lab.org/pub/materials/101112_0928GMT_primo_fs5456_fif4092.dat

[8] Sandia project. Senior Project for Sandia - Google Project Hosting. Website.URL: http://code.google.com/p/sandiaproject/