Optimization Framework and Graph-Based Approach for Relay-Assisted Bidirectional OFDMA Cellular Networks [PDF]
, 2010 This paper considers a relay-assisted bidirectional cellular network where the base station (BS) communicates with each mobile station (MS) using OFDMA for both uplink and downlink.
Li, Bin +3 more
core +1 more source
Downlink and Uplink Intelligent Reflecting Surface Aided Networks: NOMA and OMA
, 2021 Intelligent reflecting surfaces (IRSs) are envisioned to provide reconfigurable wireless environments for future communication networks. In this paper, both downlink and uplink IRS-aided non-orthogonal multiple access (NOMA) and orthogonal multiple ...
Cheng, Yanyu +4 more
core +1 more source
Interference Management with Partial Uplink/Downlink Spectrum Overlap
, 2015 Simultaneous reuse of spectral resources by uplink and downlink, denoted as in-band full duplex (FD) communication, is promoted to double the spectral efficiency when compared to its half-duplex (HD) counterpart. Interference management, however, remains
Alouini, Mohamed-Slim +3 more
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Performance Analysis of Cooperative Pattern Division Multiple Access (Co-PDMA) in Uplink Network
IEEE Access, 2017 As a promising candidate non-orthogonal multiple access scheme for the fifth generation (5G) wireless communication system, pattern division multiple access (PDMA) has received considerable attention recently.
Wanwei Tang, Shaoli Kang, Bin Ren
doaj +1 more source
Proactive Dual Connectivity for Automated Guided Vehicles in Outdoor Industrial Environment
IEEE Access, 2022 5G communication systems are one of the major enabling technologies to meet the needs of Industry 4.0. This paper focuses on the use case of automated guided vehicles (AGVs) in an outdoor industrial scenario.
Jessica Mendoza +6 more
doaj +1 more source
The Uplink Visible Light Communication Beacon System for Universal Traffic Management
IEEE Access, 2017 This paper presents a feasibility study of the uplink visible light communication (VLC) beacon system for the universal traffic management system (UTMS). The UTMS is a traffic management system beneath the National Police Agency of Japan.
Takaya Yamazato +6 more
doaj +1 more source
IEEE Access, 2020 This work considers multiple user power-domain non-orthogonal multiple access (NOMA)based downlink (DL) and uplink (UL) communication systems with potentially dissimilar fading links for all the users that can follow one of several possible distributions
Akash Agarwal +3 more
doaj +1 more source
Distributed Precoding for BER Minimization With PAPR Constraint in Uplink Massive MIMO Systems
IEEE Access, 2018 Precoding can effectively reduce the peak-to-average power ratio (PAPR) of the transmitted waveform but will usually degrade the bit error rate (BER) performance.
Wei Peng +4 more
doaj +1 more source
, 2017 This paper considers a cellular system with a full-duplex base station and half-duplex users. The base station can activate one user in uplink or downlink (half-duplex mode), or two different users one in each direction simultaneously (full-duplex mode).
Erkip, Elza +2 more
core +1 more source
Maximizing sum rate and minimizing MSE on multiuser downlink: Optimality, fast algorithms and equivalence via max-min SIR [PDF]
, 2009 Maximizing the minimum weighted SIR, minimizing the weighted sum MSE and maximizing the weighted sum rate in a multiuser downlink system are three important performance objectives in joint transceiver and power optimization, where all the users have a ...
Chiang, Mung, Srikant, R., Tan, Chee Wei
core +1 more source