scholarly journals High-Efficiency Expectation Propagation Detector for High-Order Massive MIMO Systems

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 125225-125239
Author(s):  
Guoqiang Yao ◽  
Guiwu Yang ◽  
Jianhao Hu ◽  
Chao Fei
Keyword(s):  
Massive Mimo ◽  
High Efficiency ◽  
Mimo Systems ◽  
High Order ◽  
Expectation Propagation

High Order PSK Modulation in Massive MIMO Systems with 1-bit ADCs

2020 ◽  
pp. 1-1
Author(s):  
Bule Sun ◽  
Yiqing Zhou ◽  
Jinhong Yuan ◽  
Ya-Feng Liu ◽  
Lu Wang ◽  
...  
Keyword(s):  
Massive Mimo ◽  
Mimo Systems ◽  
High Order

scholarly journals Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 521 ◽  
Author(s):  
Naser Ojaroudi Parchin ◽  
Haleh Jahanbakhsh Basherlou ◽  
Mohammad Alibakhshikenari ◽  
Yasser Ojaroudi Parchin ◽  
Yasir I. A. Al-Yasir ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Antenna Array ◽  
Massive Mimo ◽  
Printed Circuit Board ◽  
High Efficiency ◽  
Mimo Systems ◽  
Circuit Board ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Diamond Ring

A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration of the design consists of four double-fed diamond-ring slot antenna elements placed at different corners of the mobile-phone printed circuit board (PCB). A low-cost FR-4 dielectric with an overall dimension of 75 × 150 mm2 is used as the design substrate. The antenna elements are fed by 50-Ohm L-shaped microstrip-lines. Due to the orthogonal placement of microstrip feed lines, the diamond-ring slot elements can exhibit the polarization and radiation pattern diversity characteristic. A good impedance bandwidth (S11 ≤ −10 dB) of 3.2–4 GHz has been achieved for each antenna radiator. However, for S11 ≤ −6 dB, this value is 3–4.2 GHz. The proposed design provides the required radiation coverage of 5G smartphones. The performance of the proposed MIMO antenna design is examined using both simulation and experiment. High isolation, high efficiency and sufficient gain-level characteristics have been obtained for the proposed MIMO smartphone antenna. In addition, the calculated total active reflection coefficient (TARC) and envelope correlation coefficient (ECC) of the antenna elements are very low over the whole band of interest which verify the capability of the proposed multi-antenna systems for massive MIMO and diversity applications. Furthermore, the properties of the design in Data-mode/Talk-mode are investigated and presented.

scholarly journals Low Cost and High Efficiency Hybrid Architecture Massive MIMO Systems Based on DFT Processing

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Weiqiang Tan ◽  
Guixian Xu ◽  
Elisabeth De Carvalho ◽  
Mu Zhou ◽  
Lisheng Fan ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Massive Mimo ◽  
High Efficiency ◽  
Mimo Systems ◽  
Low Cost ◽  
Phase Shifters ◽  
Hybrid Architecture ◽  
Hardware Cost ◽  
Hybrid Architectures ◽  
Digital Implementation

Low cost and high efficiency, defined as energy efficiency (EE) and spectral efficiency (SE), have raised more and more attention in the fifth generation (5G) communication systems due to steadily rising hardware cost, energy consumption, and mobile traffic. This paper studies the hybrid architecture of multiuser massive MIMO systems, where the digital domain utilizes the zero-forcing (ZF) precoding scheme and the analog domain uses discrete Fourier transform (DFT) processing that significantly reduces hardware cost and energy consumption. We derive analytical expressions on the total achievable SE and EE, as well as offering insight into some engineering parameters in the system performance. Our aim is to achieve low cost and high efficiency massive MIMO system, with constraints on the overall transmit power, the number of users, and the number of radio frequency (RF) chains. Results exhibit that the total achievable SE of the hybrid architectures with DFT precessing is inferior to the full digital architectures and hybrid architectures with the ideal phase shifters, but the performance attenuation can be compensated by providing the more input SNR and higher number of RF chains. Moreover, we find that the total achievable EE of hybrid architectures with DFT precessing outperforms other massive MIMO architectures that include a full digital implementation, ideal phase shifters, and a switched network.

scholarly journals Expectation Propagation Detection for High-Order High-Dimensional MIMO Systems

2014 ◽  
Vol 62 (8) ◽  
pp. 2840-2849 ◽  
Author(s):  
Javier Cespedes ◽  
Pablo M. Olmos ◽  
Matilde Sanchez-Fernandez ◽  
Fernando Perez-Cruz
Keyword(s):  
Mimo Systems ◽  
High Order ◽  
High Dimensional ◽  
Expectation Propagation

Decentralized Signal Detection via Expectation Propagation Algorithm for Uplink Massive MIMO Systems

2020 ◽  
Vol 69 (10) ◽  
pp. 11233-11240
Author(s):  
Zhenyu Zhang ◽  
Hua Li ◽  
Yuanyuan Dong ◽  
Xiyuan Wang ◽  
Xiaoming Dai
Keyword(s):  
Signal Detection ◽  
Massive Mimo ◽  
Mimo Systems ◽  
Expectation Propagation ◽  
Propagation Algorithm

Block Expectation Propagation for Downlink Channel Estimation in Massive MIMO Systems

2016 ◽  
Vol 20 (11) ◽  
pp. 2225-2228 ◽  
Author(s):  
Sheng Wu ◽  
Zuyao Ni ◽  
Xiangming Meng ◽  
Linling Kuang
Keyword(s):  
Channel Estimation ◽  
Massive Mimo ◽  
Mimo Systems ◽  
Expectation Propagation
Sign in / Sign up

Export Citation Format

Share Document