Title :
Robust Transmission of Compressed Streams over Land Mobile Satellite Channel at Ku-Band
Author :
Murroni, Maurizio
Author_Institution :
Dept. of Electr. & Electron. Eng., Cagliari Univ., Cagliari
Abstract :
This paper presents a general framework for the efficient and robust transmission of compressed streams over land mobile satellite (LMS) channel at Ku-Band. Due to the extensive use of predictive coding, compressed data exhibit different sensitivities to transmission errors. Therefore, they are suitable for unequal error protection (UEP) techniques. UEP is mainly based on differentiated error control coding which raises the robustness of data, but also increases the transmission bandwidth. To cope with stringent satellite bandwidth restriction, wavelet packet orthogonally overlapped modulation with unequal power allocation (UPA) is used for UEP of data. UPA is driven by the sensitivities of data to LMS channel errors at Ku-Band.
Keywords :
bandwidth allocation; channel allocation; channel coding; data compression; error correction codes; land mobile radio; least mean squares methods; mobile satellite communication; modulation coding; wavelet transforms; Ku-Band; LMS channel error; compressed stream transmission; data compression; differentiated error control coding; land mobile satellite channel; least mean squares method; predictive coding; satellite bandwidth restriction; unequal error protection; unequal power allocation; wavelet packet orthogonally overlapped modulation; Bandwidth; Decoding; Error correction codes; Forward error correction; Least squares approximation; Resilience; Robustness; Satellite communication; Streaming media; Wavelet packets;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-1644-8
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2008.303
