Combined method for frequency error detection/correction in DAB-based systems

The digital audio broadcasting (DAB) standard has established the family of standards for efficient and reliable multimedia broadcasting. Based on OFDM technology the DAB standard provides high spectrum efficiency and reliable data transfer. Due to its limited channel bandwidth, DAB can be used for cognitive radio (CR) application in the TV whitespace bands. OFDM technique requires precise frequency for proper operation; at the same time the end-user equipment must have competitive price. This tradeoff is normally being solved by using carrier frequency offset (CFO) estimation and compensation blocks in the receiver path. This manuscript describes a combined algorithm for synchronization and CFO estimation for the DAB system. The method uses information about DAB synchronization channel and phase reference symbol (PRS).

[1]  Maziar Nekovee.  A survey of cognitive radio access to TV White Spaces , 2009, 2009 International Conference on Ultra Modern Telecommunications & Workshops.

[2]  A. Romanowski,et al.  Mobile multimedia services via DAB: DMB , 1997, GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record.

[3]  Arun Agarwal,et al.  Performance Analysis of OFDM Based DAB Systems Using Concatenated Coding Technique , 2011 .

[4]  Joachim Speidel,et al.  Investigations on bit error performance for video over DAB , 1998 .

[5]  Per Ola Börjesson,et al.  ML estimation of time and frequency offset in OFDM systems , 1997, IEEE Trans. Signal Process..

[6]  J.E. Mazo,et al.  Digital communications , 1985, Proceedings of the IEEE.

[7]  Antonio Torralba,et al.  A new method for simultaneous fine time synchronization and frequency offset estimation in OFDM with simple hardware , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[8]  Joseph Mitola,et al.  Cognitive radio: making software radios more personal , 1999, IEEE Wirel. Commun..

[9]  L. Thibault,et al.  Performance evaluation of COFDM for digital audio broadcasting. I. Parametric study , 1997 .