Title :
Sliding-Trellis Based Frame Synchronization
Author :
Ali, Usman ; Kieffer, Michel ; Duhamel, Pierre
Author_Institution :
CNRS, Univ Paris-Sud, Gif-sur-Yvette, France
Abstract :
Frame Synchronization (FS) is required in several communication standards in order to recover the individual frames that have been aggregated in a burst. This paper proposes a low-delay and reduced-complexity Sliding Trellis (ST)-based FS technique, compared to our previously proposed trellis-based FS method. Each burst is divided into overlapping windows in which FS is performed. Useful information is propagated from one window to the next. The proposed method makes use of soft information provided by the channel, but also of all sources of redundancy present in the protocol stack. An illustration of our ST-based approach for the WiMAX Media Access Control (MAC) layer is provided. When FS is performed on bursts transmitted over Rayleigh fading channel, the ST-based approach reduces the FS latency and complexity at the cost of a very small performance degradation compared to our full complexity trellis-based FS and outperforms state-of-the-art FS techniques.
Keywords :
Rayleigh channels; WiMax; access protocols; communication complexity; synchronisation; telecommunication standards; FS latency; MAC layer; Rayleigh fading channel; ST-based approach; WiMAX media access control layer; communication standards; overlapping windows; performance degradation; protocol stack; reduced-complexity sliding trellis-based FS technique; redundancy; sliding-trellis based frame synchronization; state-of-the-art FS techniques; trellis-based FS method; Complexity theory; Decoding; Indexes; Protocols; Synchronization; Tin; WiMAX;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5963268