4.2k citations · 5.3k across the 22 of their papers we have counts for
18 papers · 1 filter
Hybrid NOMA-TDMA for Multiple Access Channels with Non-Ideal Batteries and Circuit Cost
Rajshekhar Vishweshwar Bhat, Mehul Motani, Teng Joon Lim
We consider a multiple-access channel where the users are powered from batteries having non-negligible internal resistance. When power is drawn from the battery, a variable fractio…
Layered Coding for Energy Harvesting Communication Without CSIT
Rajshekhar Vishweshwar Bhat, Mehul Motani, Teng Joon Lim
Due to stringent constraints on resources, it may be infeasible to acquire the current channel state information at the transmitter in energy harvesting communication systems. In t…
Energy Harvesting Communication Using Finite-Capacity Batteries with Internal Resistance
Rajshekhar Vishweshwar Bhat, Mehul Motani, Teng Joon Lim
Modern systems will increasingly rely on energy harvested from their environment. Such systems utilize batteries to smoothen out the random fluctuations in harvested energy. These…
Placement Optimization of UAV-Mounted Mobile Base Stations
Jiangbin Lyu, Yong Zeng, Rui Zhang +1
In terrestrial communication networks without fixed infrastructure, unmanned aerial vehicle (UAV)-mounted mobile base stations (MBSs) provide an efficient solution to achieve wirel…
Constant Envelope Precoding for MIMO Systems
Shuowen Zhang, Rui Zhang, Teng Joon Lim
Constant envelope (CE) precoding is an appealing transmission technique, which enables highly efficient power amplification, and is realizable with a single radio frequency (RF) ch…
Throughput Maximization for Mobile Relaying Systems
Yong Zeng, Rui Zhang, Teng Joon Lim
Relaying is an effective technique to achieve reliable wireless connectivity in harsh communication environment. However, most of the existing relaying schemes are based on relays…
Wireless Communications with Unmanned Aerial Vehicles: Opportunities and Challenges
Yong Zeng, Rui Zhang, Teng Joon Lim
Wireless communication systems that include unmanned aerial vehicles (UAVs) promise to provide cost-effective wireless connectivity for devices without infrastructure coverage. Com…
Throughput Maximization for Mobile Relaying Systems
Yong Zeng, Rui Zhang, Teng Joon Lim
This paper studies a novel mobile relaying technique, where relays of high mobility are employed to assist the communications from source to destination. By exploiting the predicta…
Constant Envelope Precoding with Adaptive Receiver Constellation in MISO Fading Channel
Shuowen Zhang, Rui Zhang, Teng Joon Lim
Constant envelope (CE) precoding is an appealing transmission technique which enables the realization of high power amplifier (PA) efficiency. For CE precoding in a single-user mul…
Capacity Region of MISO Broadcast Channel for Simultaneous Wireless Information and Power Transfer
Shixin Luo, Jie Xu, Teng Joon Lim +1
This paper studies a multiple-input single-output (MISO) broadcast channel (BC) featuring simultaneous wireless information and power transfer (SWIPT), where a multi-antenna access…
Fading Two-Way Relay Channels: Physical-Layer Versus Digital Network Coding
Zhi Chen, Tengjoon Lim, Mehul Motani
In this paper, we consider three transmit strategies for the fading three-node, two-way relay network (TWRN) -- physical-layer network coding (PNC), digital network coding (DNC) an…
Downlink and Uplink Energy Minimization Through User Association and Beamforming in Cloud RAN
Shixin Luo, Rui Zhang, Teng Joon Lim
The cloud radio access network (C-RAN) concept, in which densely deployed access points (APs) are empowered by cloud computing to cooperatively support mobile users (MUs), to impro…
Joint Transmitter and Receiver Energy Minimization in Multiuser OFDM Systems
Shixin Luo, Rui Zhang, Teng Joon Lim
In this paper, we formulate and solve a weighted-sum transmitter and receiver energy minimization (WSTREMin) problem in the downlink of an orthogonal frequency division multiplexin…
Optimal Power and Range Adaptation for Green Broadcasting
Shixin Luo, Rui Zhang, Teng Joon Lim
Improving energy efficiency is key to network providers maintaining profit levels and an acceptable carbon footprint in the face of rapidly increasing data traffic in cellular netw…
Digital Network Coding Aided Two-way Relaying: Energy Minimization and Queue Analysis
Zhi Chen, Teng Joon Lim, Mehul Motani
In this paper, we consider a three node, two-way relay system with digital network coding over static channels where all link gains are assumed to be constant during transmission.…
Optimal Save-Then-Transmit Protocol for Energy Harvesting Wireless Transmitters
Shixin Luo, Rui Zhang, Teng Joon Lim
In this paper, the design of a wireless communication device relying exclusively on energy harvesting is considered. Due to the inability of rechargeable energy sources to charge a…
Turbo Receiver Design for Phase Noise Mitigation in OFDM Systems
Gokul Sridharan, Teng Joon Lim
This paper addresses the issue of phase noise in OFDM systems. Phase noise (PHN) is a transceiver impairment resulting from the non-idealities of the local oscillator. We present a…
A Variational Inference Framework for Soft-In-Soft-Out Detection in Multiple Access Channels
D. D. Lin, T. J. Lim
We propose a unified framework for deriving and studying soft-in-soft-out (SISO) detection in interference channels using the concept of variational inference. The proposed framewo…