141 citations · 329 across the 9 of their papers we have counts for
9 papers
Massive MIMO with Multi-Antenna Users: When are Additional User Antennas Beneficial?
Xueru Li, Emil Björnson, Shidong Zhou +1
We analyze the performance of massive MIMO systems with -antenna users. The benefit is that streams can be multiplexed per user, at the price of increasing the channel estim…
Capacity Analysis for Spatially Non-wide Sense Stationary Uplink Massive MIMO Systems
Xueru Li, Shidong Zhou, Emil Björnson +1
Channel measurements show that significant spatially non-wide-sense-stationary characteristics rise in massive MIMO channels. Notable parameter variations are experienced along the…
Green 5G Heterogeneous Networks through Dynamic Small-Cell Operation
Shijie Cai, Yueling Che, Lingjie Duan +3
Traditional macro-cell networks are experiencing an upsurge of data traffic, and small-cells are deployed to help offload the traffic from macro-cells. Given the massive deployment…
A Multi-cell MMSE Precoder for Massive MIMO Systems and New Large System Analysis
Xueru Li, Emil Björnson, Erik G. Larsson +2
In this paper, a new multi-cell MMSE precoder is proposed for massive MIMO systems. We consider a multi-cell network where each cell has users and orthogonal pilot sequence…
A Multi-cell MMSE Detector for Massive MIMO Systems and New Large System Analysis
Xueru Li, Emil Björnson, Erik G. Larsson +2
In this paper, a new multi-cell MMSE detector is proposed for massive MIMO systems. Let and denote the number of users in each cell and the number of available pilot sequen…
Distributed Multilevel Diversity Coding
Zhiqing Xiao, Jun Chen, Yunzhou Li +1
In distributed multilevel diversity coding, correlated sources (each with components) are encoded in a distributed manner such that, given the outputs from any encoders…
Power Allocation and Time-Domain Artificial Noise Design for Wiretap OFDM with Discrete Inputs
Haohao Qin, Yin Sun, Tsung-Hui Chang +4
Optimal power allocation for orthogonal frequency division multiplexing (OFDM) wiretap channels with Gaussian channel inputs has already been studied in some previous works from an…
Optimal Power Allocation for OFDM-Based Wire-Tap Channels with Arbitrarily Distributed Inputs
Haohao Qin, Yin Sun, Xiang Chen +2
In this paper, we investigate power allocation that maximizes the secrecy rate of orthogonal frequency division multiplexing (OFDM) systems under arbitrarily distributed inputs. Co…
Optimal Real-time Spectrum Sharing between Cooperative Relay and Ad-hoc Networks
Yin Sun, Xiaofeng Zhong, Tsung-Hui Chang +3
Optimization based spectrum sharing strategies have been widely studied. However, these strategies usually require a great amount of real-time computation and significant signaling…