Spectral Efficient and Fair User Pairing for Full-Duplex Communication in Cellular Networks [Elektronisk resurs]

• —A promising new transmission mode in cellular networks is the three-node full-duplex mode, which involves a base station with full-duplex capability and two half-duplex user transmissions on the same frequency channel for uplink and downlink. The three-node full-duplex mode can increase spectral efficiency, especially in the low transmit power regime, without requiring full-duplex capability at user devices. However, when a large set of users is scheduled in this mode, self-interference at the base station and user-to-user interference can substantially hinder the potential gains of full-duplex communications. This paper investigates the problem of grouping users to pairs and assigning frequency channels to each pair in a spectral efficient and fair manner. Specifically, the joint problem of user uplink/downlink frequency channel pairing and power allocation is formulated as a mixed integer nonlinear problem that is solved by a novel joint fairness assignment maximization algorithm. Realistic system level simulations indicate that the spectral efficiency of the users having the lowest spectral efficiency is increased by the proposed algorithm, while a high ratio of connected users in different loads and self-interference levels is maintained. 

Ämnesord

Engineering and Technology  (hsv)

Electrical Engineering, Electronic Engineering, Information Engineering  (hsv)

Communication Systems  (hsv)

Teknik och teknologier  (hsv)

Elektroteknik och elektronik  (hsv)

Kommunikationssystem  (hsv)

Electrical Engineering  (kth)

Elektro- och systemteknik  (kth)

Informations- och kommunikationsteknik  (kth)

Information and Communication Technology  (kth)

Indexterm och SAB-rubrik

full-duplex

power control

channel assignment

spectral efficient

cellular communications