This letter analyzes and compares the performance of full-duplex relaying (FDR) and half-duplex relaying (HDR) for ultra-reliable short-packet communications. Specifically, we derive both approximate and asymptotic closed-form expressions of the block error rate (BLER) for FDR and HDR using short packets with finite blocklength codes. We define and attain a closed-form expression of a critical ...

Consider a relay cascade, i.e. a network where the source node, the sink node and a certain number of intermediate relay nodes are arranged in a line. We assume that adjacent node pairs are connected by error-free (q + 1)-ary pipes. The following communication scenario is treated. The source and a subset of the relays wish to communicate independent information to a common sink under the condit...

This presentation provides an overview of essential aspects to be considered when introducing full-duplex operation into relaying systems. Firstly, the unavoidable self-interference is mitigated by passive isolation, active cancellation and beamforming-based suppression as well as transmit power adaptation. Secondly, the feasibility of full-duplex operation in the presence of residual self-inte...

A cooperative full duplex (FD) nonorthogonal multiple access (NOMA) scheme over Rician fading channels is considered. The practical, imperfect successive interference cancellation and residual hardware impairments at transceivers are taken into account. To evaluate the performance of considered system, analytical approximate expressions for outage probability ergodic rate system derived, asympt...

In a bi-directional relay channel, two nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of a relay. In this paper, we derive achievable rate regions for four new half-duplex protocols and compare these to four existing half-duplex protocols and outer bounds. In time, our protocols consist of either two or three phases. In the two phase protoco...

A discrete memoryless half-duplex relay channel is constructed from a broadcast channel from the source to the relay and destination and a multiple access channel from the source and relay to the destination. When the relay listens, the channel operates in the broadcast mode. The channel switches to the multiple access mode when the relay transmits. If the broadcast component channel is physica...

We consider a general multiple antenna network with multiple sources, multiple destinations and multiple relays in terms of diversity-multiplexing tradeoff (DMT). We examine several projections of this most general problem taking into account the network geometry (clustered or non-clustered), the processing capability of the relays (half-duplex or full-duplex) and the number of antennas the nod...

In a bi-directional relay channel, two nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of relays. Recent work has considered information theoretic limits of the bi-directional relay channel with a single relay. In this work we consider bi-directional relaying with multiple relays. We derive achievable rate regions and outer bounds for half-du...

We consider a dynamic time division duplex (DTDD) enabled cell-free massive multiple-input multiple-output (CF-mMIMO) system, where each half-duplex (HD) access point (AP) is scheduled to operate in the uplink (UL) or downlink (DL) mode based on data demands of user equipments (UEs), with goal maximizing sum UL-DL spectral efficiency (SE). develop new, low complexity, greedy algorithm for combi...