Different coherent detection methods for carrier acquisition and channel decoding

The method of carrier acquisition which we have used in this paper is a modified form of binary search algorithm. This modified search algorithm is a hybrid of two search algorithms which are "Binary search tree" and "Modified search tree". Firstly the modulated signal is received by the receiver where it is analyzed to acquire carrier. The receiver consists of two sections. One section uses the binary search tree process while the other section uses the modified search tree. Firstly binary search tree is used for carrier acquisition method and secondly the modified search tree is used. The overall tree diagram is a real-time tree diagram and it is formed during the process of carrier acquisition. This hybrid tree structure proves more helpful for carrier acquisition process as it is more accurate, low cost, less complex and less time consuming.

[1]  R. Hartley.  Subexpression sharing in filters using canonic signed digit multipliers , 1996 .

[2]  Patrick Schaumont,et al.  A new algorithm for elimination of common subexpressions , 1999, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst..

[3]  H. Kikuchi,et al.  A single-chip MSK coherent demodulator for mobile radio transmission , 1985, IEEE Transactions on Vehicular Technology.

[4]  Hiroshi Suzuki,et al.  Fast carrier-tracking coherent detection with dual-mode carrier recovery circuit for digital land mobile radio transmission , 1989, IEEE J. Sel. Areas Commun..

[5]  S.M. Elnoubi.  Analysis of GMSK with differential detection in land mobile radio channels , 1986, IEEE Transactions on Vehicular Technology.

[6]  Hikmet Sari,et al.  New phase and frequency detectors for carrier recovery in PSK and QAM systems , 1988, IEEE Trans. Commun..

[7]  Hikmet Sari,et al.  Baseband Equalization and Carrier Recovery in Digital Radio Systems , 1987, IEEE Trans. Commun..

[8]  Dariush Divsalar,et al.  Multiple-symbol differential detection of MPSK , 1990, IEEE Trans. Commun..

[9]  Stephen Dean Brown,et al.  On Digital Search Trees - A Simple Method for Constructing Balanced Binary Trees , 2007, ICSOFT.

[10]  David Bull,et al.  Primitive operator digital filters , 1991 .

[11]  L. Wanhammar,et al.  Design of high-speed multiplierless filters using a nonrecursive signed common subexpression algorithm , 2002 .

[12]  H. Samueli,et al.  Design techniques for silicon compiler implementations of high-speed FIR digital filters , 1996 .

[13]  A. Dempster,et al.  Use of minimum-adder multiplier blocks in FIR digital filters , 1995 .

[14]  Toshio Miki,et al.  Multilevel decision method for band-limited digital FM with limiter-discriminator detection , 1984, IEEE Transactions on Vehicular Technology.

[15]  Alexander M. Haimovich,et al.  Multiple-symbol differential detection with interference suppression , 2003, IEEE Trans. Commun..

[16]  M. Simon,et al.  Differential Versus Limiter - Discriminator Detection of Narrow-Band FM , 1983, IEEE Transactions on Communications.

[17]  J. Shynk.  Frequency-domain and multirate adaptive filtering , 1992, IEEE Signal Processing Magazine.

[18]  Miodrag Potkonjak,et al.  Multiple constant multiplications: efficient and versatile framework and algorithms for exploring common subexpression elimination , 1996, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst..

[19]  Costas N. Georghiades.  Blind carrier phase acquisition for QAM constellations , 1997, IEEE Trans. Commun..