Title :
Low-Delay Joint Source-Channel Mappings for the Gaussian MAC
Author :
Kron, Johannes ; Alajaji, Fady ; Skoglund, Mikael
Author_Institution :
Sch. of Electr. Eng., R. Inst. of Technol. (KTH), Stockholm, Sweden
Abstract :
The bivariate Gaussian multiterminal source coding problem with transmission over the Gaussian multiple-access channel is studied. We propose the use of low-delay joint source - channel mappings and show how performance saturation, which is unavoidable with linear transmission, can be overcome by optimizing the mappings. The optimized mappings are in general nonlinear and perform a combination of hard and soft decision signaling for the error-resilient transmission of analog data.
Keywords :
Gaussian channels; combined source-channel coding; Gaussian MAC; Gaussian multiple-access channel; Gaussian multiterminal source coding; decision signaling; error resilient transmission; low-delay joint source-channel mappings; performance saturation; Algorithm design and analysis; Correlation; Joints; Receivers; Signal to noise ratio; Source coding; Gaussian multiple-access channel; Joint source-channel coding; correlated sources; low-delay transmission; mean square error; multi-terminal source coding;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.120413.132088
