Using a Sorted QR Decomposition Algorithm for Multiuser MIMO Downlink Transmission

2021 ◽  
Vol I (I) ◽  
Author(s):  
S Lakshmi Narayanan ◽  
Robert Theivadas J
Keyword(s):  
Bit Error Rate ◽  
Spectral Efficiency ◽  
Large Scale ◽  
Qr Decomposition ◽  
Decomposition Algorithm ◽  
Wireless Technology ◽  
Multiuser Mimo ◽  
Downlink Transmission ◽  
High Data ◽  
Mimo Downlink

MIMO is a wireless technology that uses large scale antennas to transfer more data at the same time and to increase spectral efficiency. To achieve high data rate with less bandwidth we use decomposition algorithm. Among various de-composition algorithm QR decomposition algorithm outperforms low bit error rate(BER), but the computational complexity is prohibitively high when the system incorporates large number of antennas. This paper presents a low computational sorted QR decomposition (SQRD) algorithm for MIMO.SQRD uses precoding technique at the transmitter which decomposes the channel that can sent in parallel.

scholarly journals Using a Sorted QR Decomposition Algorithm for Multiuser MIMO Downlink Transmission

2021 ◽  
Vol I (I) ◽  
Author(s):  
Lakshmi Narayanan S ◽  
Robert Theivadas J
Keyword(s):  
Bit Error Rate ◽  
Spectral Efficiency ◽  
Large Scale ◽  
Qr Decomposition ◽  
Decomposition Algorithm ◽  
Wireless Technology ◽  
Multiuser Mimo ◽  
Downlink Transmission ◽  
High Data ◽  
Mimo Downlink

MIMO is a wireless technology that uses large scale antennas to transfer more data at the same time and to increase spectral efficiency. To achieve high data rate with less bandwidth we use decomposition algorithm. Among various de-composition algorithm QR decomposition algorithm outperforms low bit error rate(BER), but the computational complexity is prohibitively high when the system incorporates large number of antennas. This paper presents a low computational sorted QR decomposition (SQRD) algorithm for MIMO.SQRD uses precoding technique at the transmitter which decomposes the channel that can sent in parallel.

scholarly journals EQSM-based multiuser MIMO downlink transmission for correlated fading channels

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Francisco R. Castillo-Soria ◽  
Carlos A. Gutierrez ◽  
Abel García-Barrientos ◽  
Armando Arce-Casas ◽  
Jorge Simón
Keyword(s):  
Fading Channels ◽  
Multiuser Mimo ◽  
Downlink Transmission ◽  
Correlated Fading ◽  
Correlated Fading Channels ◽  
Mimo Downlink ◽  
Multiuser Mimo Downlink

Multiuser MIMO Downlink Transmission using Spatial Modulation

2015 ◽  
Vol 13 (11) ◽  
pp. 3568-3572 ◽  
Author(s):  
F.R.C. Soria ◽  
J.S. Garcia ◽  
V.I.R. Abdala ◽  
R.P. Michel
Keyword(s):  
Spatial Modulation ◽  
Multiuser Mimo ◽  
Downlink Transmission ◽  
Mimo Downlink ◽  
Multiuser Mimo Downlink

scholarly journals GWO Based Optimal Channel Estimation Technique for Large Scale Mimo in LTE Network

2019 ◽  
Vol 8 (12) ◽  
pp. 5306-5314
Keyword(s):  
Channel Estimation ◽  
Spectral Efficiency ◽  
Large Scale ◽  
Performance Metrics ◽  
Mean Squared Error ◽  
Mimo Systems ◽  
Fourth Generation ◽  
High Data ◽  
Data Rates ◽  
High Data Rates

The Wireless Systems Are Employed With More Number Of Antennas For Fulfilling The Demand For High Data Rates. In Telecommunication, Lte-A (Long Term EvolutionAdvanced) Is A Well-Known Technology Intended For Wireless Broadband Communication Aimed At Data Terminals And Mobile Devices. Multiple Input Multiple Output (Mimo) Technology Is Used By Lte Which Is Also Known As Fourth Generation Mobile Networks To Attain Very High Data Rates In Downlink And Uplink Channels. Though The Mimo Systems In Massive Mimo Are Provided By Multiple Antennas, The Design Of The Appropriate Non-Erroneous Detection Algorithm Is A Major Challenge. Also, With The Increase In Quantity Of Antennas, The System's Spectral Efficiency Begins To Degrade. So As To Deal With This Issue, A Proper Algorithm Has To Be Utilized For Channel Estimation. The Bio Inspired Algorithms Have Shown Potential In Handling These Issues In Communication And Signal Processing. So, Grey Wolf Optimization (Gwo) Algorithm Is Used In This Approach To Estimate The Most Optimal Communication Channel. Also, The Spectral Efficiency And Data Capacity Are Enhanced Using The Presented Approach. The Proposed Approach’s Performance Is Compared With The Existing Approaches. The Simulation Result Exposes That The Presented Channel Estimation Approach Is Far Better Than Existing Channel Estimation Approaches In Performance Metrics Such As Bit Error Rate, Minimum Delay, Papr, Spectral Efficiency, Uplink Throughput, Downlink Throughput And Mean-Squared-Error

Multiuser MIMO Downlink Transmission Using SSK and Orthogonal Walsh Codes

2016 ◽  
Vol 89 (4) ◽  
pp. 1089-1102 ◽  
Author(s):  
Francisco Ruben Castillo Soria ◽  
Jaime Sánchez García ◽  
Ramón Parra Michel
Keyword(s):  
Multiuser Mimo ◽  
Downlink Transmission ◽  
Mimo Downlink ◽  
Multiuser Mimo Downlink ◽  
Walsh Codes
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