528 citations · 3.2k across the 54 of their papers we have counts for
19 papers · 1 filter
Joint Channel Training and Feedback for FDD Massive MIMO Systems
Wenqian Shen, Linglong Dai, Yi Shi +2
Massive multiple-input multiple-output (MIMO) is widely recognized as a promising technology for future 5G wireless communication systems. To achieve the theoretical performance ga…
Joint CSIT Acquisition Based on Low-Rank Matrix Completion for FDD Massive MIMO Systems
Wenqian Shen, Linglong Dai, Byonghyo Shim +2
Channel state information at the transmitter (CSIT) is essential for frequency-division duplexing (FDD) massive MIMO systems, but conventional solutions involve overwhelming overhe…
Structured Compressive Sensing Based Spatio-Temporal Joint Channel Estimation for FDD Massive MIMO
Zhen Gao, Linglong Dai, Wei Dai +2
Massive MIMO is a promising technique for future 5G communications due to its high spectrum and energy efficiency. To realize its potential performance gain, accurate channel estim…
On the Spectral Efficiency of Massive MIMO Systems with Low-Resolution ADCs
Jiayi Zhang, Linglong Dai, Shengyang Sun +1
The low-resolution analog-to-digital convertor (ADC) is a promising solution to significantly reduce the power consumption of radio frequency circuits in massive multiple-input mul…
Structured Compressive Sensing Based Superimposed Pilot Design in Downlink Large-Scale MIMO Systems
Zhen Gao, Linglong Dai, Zhaocheng Wang
Large-scale multiple-input multiple-output (MIMO) with high spectrum and energy efficiency is a very promising key technology for future 5G wireless communications. For large-scale…
Priori-Information Aided Iterative Hard Threshold: A Low-Complexity High-Accuracy Compressive Sensing Based Channel Estimation for TDS-OFDM
Zhen Gao, Chao Zhang, Zhaocheng Wang +1
This paper develops a low-complexity channel estimation (CE) scheme based on compressive sensing (CS) for time-domain synchronous (TDS) orthogonal frequency-division multiplexing (…
Robust Preamble Design for Synchronization, Signaling Transmission and Channel Estimation
Zhen Gao, Chao Zhang, Zhaocheng Wang
The European second generation digital video broadcasting standard (DVB-T2) introduces a P1 symbol. This P1 symbol facilitates the coarse synchronization and carries 7-bit transmis…
Compressive Sensing Based Multi-User Detector for the Large-Scale SM-MIMO Uplink
Zhen Gao, Linglong Dai, Zhaocheng Wang +2
Conventional spatial modulation (SM) is typically considered for transmission in the downlink of small-scale MIMO systems, where a single one of a set of antenna elements (AEs) is…
MmWave Massive MIMO Based Wireless Backhaul for 5G Ultra-Dense Network
Zhen Gao, Linglong Dai, De Mi +3
Ultra-dense network (UDN) has been considered as a promising candidate for future 5G network to meet the explosive data demand. To realize UDN, a reliable, Gigahertz bandwidth, and…
Asymptotic Orthogonality Analysis of Time-Domain Sparse Massive MIMO Channels
Zhen Gao, Linglong Dai, Chau Yuen +1
The theoretical analysis of downlink massive MIMO usually assumes the ideal Gaussian channel matrix with asymp- totic orthogonality of channel vectors associated with different use…
Super-Resolution Sparse MIMO-OFDM Channel Estimation Based on Spatial and Temporal Correlations
Zhen Gao, Linglong Dai, Zhaohua Lu +2
This letter proposes a parametric sparse multiple input multiple output (MIMO)-OFDM channel estimation scheme based on the finite rate of innovation (FRI) theory, whereby super-res…
Tracking A Dynamic Sparse Channel Via Differential Orthogonal Matching Pursuit
Xudong Zhu, Linglong Dai, Wei Dai +2
This paper considers the problem of tracking a dynamic sparse channel in a broadband wireless communication system. A probabilistic signal model is firstly proposed to describe the…
Effective capacity of communication systems over - shadowed fading channels
Jiayi Zhang, Linglong Dai, Wolfgang H. Gerstacker +1
The effective capacity of communication systems over generalized - shadowed fading channels is investigated in this letter. A novel and analytical expression for the exact ef…
Compressive sensing based differential channel feedback for massive MIMO
Wenqian Shen, Linglong Dai, Yi Shi +2
Massive multiple-input multiple-output (MIMO) is becoming a key technology for future 5G wireless communications. Channel feedback for massive MIMO is challenging due to the substa…
Unified Performance Analysis of Mixed Radio Frequency/Free-Space Optical Dual-Hop Transmission Systems
Jiayi Zhang, Linglong Dai, Yu Zhang +1
The mixed radio frequency (RF)/free-space optical (FSO) relaying is a promising technology for coverage improvement, while there lacks unified expressions to describe its performan…
Smart Pilot Assignment for Massive MIMO
Xudong Zhu, Zhaocheng Wang, Linglong Dai +1
A massive multiple-input multiple-output (MIMO) system, which utilizes a large number of antennas at the base station (BS) to serve multiple users, suffers from pilot contamination…
Graph Coloring Based Pilot Allocation to Mitigate Pilot Contamination for Multi-Cell Massive MIMO Systems
Xudong Zhu, Linglong Dai, Zhaocheng Wang
A massive multiple-input multiple-output (MIMO) system, which utilizes a large number of base station (BS) antennas to serve a set of users, suffers from pilot contamination due to…
Achievable Rate of Rician Large-Scale MIMO Channels with Transceiver Hardware Impairments
Jiayi Zhang, Linglong Dai, Xinling Zhang +2
Transceiver hardware impairments (e.g., phase noise, in-phase/quadrature-phase (I/Q) imbalance, amplifier non-linearities, and quantization errors) have obvious degradation effects…
On the Ergodic Capacity of MIMO Free-Space Optical Systems over Turbulence Channels
Jiayi Zhang, Linglong Dai, Yanjun Han +2
The free-space optical (FSO) communications can achieve high capacity with huge unlicensed optical spectrum and low operational costs. The corresponding performance analysis of FSO…