نتایج جستجو برای: half duplex

تعداد نتایج: 206313  

Journal: :CoRR 2011
Achaleshwar Sahai Gaurav Patel Ashutosh Sabharwal

Recent work has shown the feasibility of single-channel fullduplex wireless physical layer, allowing nodes to send and receive in the same frequency band at the same time. In this report, we first design and implement a real-time 64subcarrier 10 MHz full-duplex OFDM physical layer, FDPHY. The proposed FD-PHY not only allows synchronous full-duplex transmissions but also selective asynchronous f...

Journal: :journal of algebraic systems 2015
morteza jafarpour fatemeh alizadeh

in this paper using strongly duplexes we introduce a new class of (semi)hypergroups. the associated (semi)hypergroup from a strongly duplex is called duplex (semi)hypergroup. two computer programs written in matlab show that the two groups $z_{2n}$ and $z_{n}times z_{2}$ produce a strongly duplex and its associated hypergroup is a complementary feasible hypergroup.

Journal: :Trans. Emerging Telecommunications Technologies 2014
Nikolaos Nomikos Demosthenes Vouyioukas Themistoklis Charalambous Ioannis Krikidis Prodromos Makris Dimitrios N. Skoutas Mikael Johansson Charalabos Skianis

In this work, we present a buffer-aided successive opportunistic relaying scheme that aims at improving the average capacity of the network when inter-relay interference arises between relays that are selected for simultaneous transmission and reception. We propose a relay selection policy that, by exploiting the benefits of buffering at the relays, decouples the receiving relay at the previous...

Journal: :CoRR 2017
Arman Shojaeifard Kai-Kit Wong Wei Yu Gan Zheng Jie Tang

Full-duplex (FD) has emerged as a disruptive communications paradigm for enhancing the achievable spectral efficiency (SE), thanks to the recent major breakthroughs in self-interference (SI) mitigation. The FD versus half-duplex (HD) SE gain, in cellular networks, is however largely limited by the mutual-interference (MI) between the downlink (DL) and the uplink (UL). A potential remedy for tac...

2013
Hirley Alves Richard Demo Souza Matti Latva-aho

In a cognitive radio context under spectrum sharing constraints, a secondary network may transmit concurrently with the primary one as long as the communication of this latter is not compromised. For such an operation, a maximum allowable interference level at the primary receiver is defined, and secondary users (SUs) should take into account this threshold during the transmission in order to a...

2003
Arun Saha Mart Molle

We present a novel switched full-duplex LAN architecture which can greatly simplify the cabling requirements in areas that must support high port densities and/or are subject to frequent changes. Instead of providing a separate cable to connect each host to a dedicated port on a monolithic switch behind the wall, we emulate the shared bus topology from the early days of Ethernet by daisy-chaini...

Journal: :CoRR 2017
Hoyoun Kim Jong-Seon No

In this paper, we propose an interference alignment (IA) scheme for the multiple-input multipleoutput (MIMO) uplink cellular network with the help of a relay which operates in half-duplex mode. The proposed scheme only requires global channel state information (CSI) knowledge at the relay, with no transmitter beamforming and time extension at the user equipment (UE), which differs from conventi...

2015
Ahmad AlAmmouri Hesham ElSawy Mohamed-Slim Alouini

Backward compatibility is an essential ingredient for the success of new technologies. In the context of in-band full-duplex (FD) communication, FD base stations (BSs) should support half-duplex (HD) users’ equipment (UEs) without sacrificing the foreseen FD gains. This paper presents flexible and tractable modeling framework for multi-tier cellular networks with FD BSs and FD/HD UEs. The prese...

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