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1722 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 47, NO. 11, NOVEMBER 1999 Visual Communication via Trellis Coding
 

Summary: 1722 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 47, NO. 11, NOVEMBER 1999
Visual Communication via Trellis Coding
and Transmission Energy Allocation
Fady I. Alajaji, Member, IEEE, Saud A. Al-Semari, Member, IEEE, and Philippe Burlina
Abstract-- An unequal error protection approach for the re-
liable communication of visual information over additive white
Gaussian noise channels is proposed and studied. This method
relies on a bandwidth-efficient coded modulation scheme that
employs selective channel coding and transmission energy al-
location in conjunction with sequence maximum a posteriori
soft-decision detection. Experimental results indicate that this
scheme exhibits graceful performance degradation as the channel
conditions deteriorate and provides substantial objective and sub-
jective improvements over uncoded and equal-error protection
systems. Coding gains of up to 4 dB in Eb=N0 are achieved.
Index Terms-- Image/video communication, MAP detection,
transmission energy allocation, trellis-coded modulation, unequal
error protection.
I. INTRODUCTION
THE SOURCE and channel coding functions of a com-

  

Source: Alajaji, Fady - Department of Mathematics and Statistics, Queen's University (Kingston)

 

Collections: Engineering