In this work, we address the analog transmission of correlated information over fading Multiple Access Channels (MACs) using analog Joint Source Channel Coding (JSCC). We consider module-like mappings to encode the source data and the utilization of different orthogonal access schemes. The user information is individually mapped at each transmitter and the receiver exploits the source correlation and the properties of the module mappings to decode the received symbols. We also propose a Maximum-A-Posteriori (MAP) method which achieves similar performance to that of the optimal decoding with significantly lower complexity. The obtained results confirm the potential of using analog JSCC techniques to transmit correlated data over fading MACs.
['Oscar Fresnedo', 'Pedro Suarez-Casal', 'Luis Castedo', 'Javier Garcia-Frias']
Analog distributed coding of correlated sources for fading multiple access channels