Differential quality-of-service in multiple-access communication via distributed rate splitting

We introduce a new distributed multiple-access coding strategy called asymmetric distributed rate splitting for the additive white Gaussian noise multiple-access channel and discrete memoryless multiple-access channel. This strategy uses a rate splitting approach or a random switching approach to accommodate differential user rate requirements in a distributed manner. The achieved rates under this scheme are asymptotically optimal from a fundamental information theoretic viewpoint.