We compute the exact rate sum of a symmetric Gaussian interference channel for the HanKobayashi region with Gaussian signaling for a subset of parameters in the weak interference regime. In this subset we identify three regimes of operation: an initial set where treating interference as noise is optimal, an intermediate regime where one employs a time-sharing strategy (with power control) betwe...

• Symbols denoting random variables are capitalized but symbols denoting their realization are not. • Bold face is used for vectors. • Blackboard bold or non-italic face are used for sets, calligraphic face for system of sets. • We use x̄ as a shorthand for the difference 1 − x for x ∈ [0, 1]. • Z is the set of all integers and Z+ = {z ∈ Z : z ≥ 0}. • 2 is the set {0, 1}. • [n] denotes the set {...

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We derive the average achievable rate of an adaptive wireless multicast method with antenna diversity in Nakagami fading channels when the rate is selected by the minimum signal-to-noise ratio (SNR) of the multicast group. Based on the limiting distribution of the minimum SNR, we then derive an approximation to the average achievable rate, which provides accurate values easily in a wide range o...

In this channel,we study rate region of a Gaussian two-way diamond channel which operates in half-duplex mode. In this channel, two transceiver (TR) nodes exchange their messages with the help of two relay nodes. We consider a special case of the Gaussian two-way diamond channels which is called Compute-and-Forward Multiple Access Channel (CF-MAC). In the CF-MAC, the TR nodes transmit their mes...

This paper considers a Gaussian two-user multiple-input multiple-output (MIMO) multiple access channel (MAC) with cooperating encoders. After defining a form of cooperation strategy, we derive achievable rate bounds by applying the results obtained by Willems for the MAC with generalised feedback. Then, we characterise an achievable rate region and also provide a lower bound for this region, wh...

An achievable rate region is obtained for a primary multiple access network coexisting with a secondary link of one transmitter and a corresponding receiver. The rate region depicts the sum primary rate versus the secondary rate and is established assuming that the secondary link performs rate-splitting. The achievable rate region is the union of two types of achievable rate regions. The first ...