Novel Multiple–Input Multiple Output Precoding Techniques with Improved Bit Error Rate Performance

2015 ◽  
Vol 12 (11) ◽  
pp. 4794-4802
Author(s):  
S Sobana ◽  
K Meena Alias Jeyanthi
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Multiple Input Multiple Output ◽  
Rate Performance ◽  
Multiple Input ◽  
Input Multiple Output

Bit Error Rate of Atmospheric Optical Multiple Input Multiple Output System with Pulse Position Modulation Under Influence of Combined Effect

2019 ◽  
Vol 56 (9) ◽  
pp. 090602
Author(s):  
张悦 Zhang Yue ◽  
王惠琴 Wang Huiqin ◽  
曹明华 Cao Minghua ◽  
雷景丽 Lei Jingli ◽  
王道斌 Wang Daobin
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Multiple Input Multiple Output ◽  
Combined Effect ◽  
Pulse Position Modulation ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Output System

Performance of 16QAM on UV Communication

2013 ◽  
Vol 475-476 ◽  
pp. 863-866
Author(s):  
Rui Zhu ◽  
Da Hai Han
Keyword(s):  
Wireless Communication ◽  
Bit Error Rate ◽  
Error Rate ◽  
Amplitude Modulation ◽  
Multiple Input Multiple Output ◽  
Modulation Method ◽  
Multiple Input ◽  
Communication Environments ◽  
Input Multiple Output ◽  
Mimo Technology

Explorations on ultraviolet (UV) communication field are relatively little among wireless communication for lacking of suitable simulation equipments. Possible mode was investigated on UV by combining mature coding techniques with gradually improved multiple-input multiple-output (MIMO) technology. A candidate modulation method, the 16-ary quadrature-amplitude modulation (16QAM), was analyzed for UV communication using MIMO technology. Comparisons between 16QAM and OOK were presented to better depict characteristics of 16QAM through simulation. The result shows that under specific bit error rate (BER) requirements for most communication environments, 16QAM can help save transmitting power and enlarges transmission capacity.

scholarly journals Bit Error Rate Performance of a MIMO-CDMA System Employing Parity-Bit-Selected Spreading in Frequency Nonselective Rayleigh Fading

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Claude D'Amours ◽  
Adel Omar Dahmane
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Rayleigh Fading ◽  
Multiple Input Multiple Output ◽  
Cdma System ◽  
Multiple Input ◽  
Output Code ◽  
Input Multiple Output ◽  
Analytical Result ◽  
Code Division Multiple

We analytically derive the upper bound for the bit error rate (BER) performance of a single user multiple input multiple output code division multiple access (MIMO-CDMA) system employing parity-bit-selected spreading in slowly varying, flat Rayleigh fading. The analysis is done for spatially uncorrelated links. The analysis presented demonstrates that parity-bit-selected spreading provides an asymptotic gain of10log(Nt)dB over conventional MIMO-CDMA when the receiver has perfect channel estimates. This analytical result concurs with previous works where the (BER) is determined by simulation methods and provides insight into why the different techniques provide improvement over conventional MIMO-CDMA systems.

Recursive Spatial Multiplexing with Adaptive Interference Whitening

2017 ◽  
Vol 6 (2) ◽  
pp. 43-59
Author(s):  
Usama Y. Mohamad ◽  
Ibrahim A. Shah ◽  
Thomas Hunziker ◽  
Dirk H. Dahlhaus
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Mean Squared Error ◽  
Multiple Input Multiple Output ◽  
Low Complexity ◽  
Spatial Multiplexing ◽  
Rate Performance ◽  
Mimo Channels ◽  
Minimum Mean Squared Error ◽  
Input Multiple Output

This article describes how recursive spatial multiplexing (RSM) is a closed-loop multiple-input multiple-output (MIMO) structure for achieving the capacity offered by MIMO channels with a low-complexity detector. The authors investigate how to make RSM able to provide a bit-error rate performance, which is robust against different types and levels of interference. The interference arising from simultaneous transmission of information signals is taken into account in the RSM scheme at the receiver using a whitening approach. Here, the covariance matrix is estimated and used subsequently for defining the retransmission subspace identifier to be fed back to the transmitter. The performance of this adaptive RSM scheme is compared with standard linear detection schemes like zero-forcing and minimum mean-squared error receivers. It turns out that the adaptive interference whitening substantially improves the bit-error rate performance. Moreover, adaptive RSM leads to a performance being independent of the correlation coefficient of the interference signals.

Analyzing of UVLC system considering the effect of water depth

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mustafa B. Al-Deen ◽  
Mazin Ali A. Ali ◽  
Zeyad A. Saleh
Keyword(s):  
Coastal Water ◽  
Water Depth ◽  
Bit Error Rate ◽  
Multiple Input Multiple Output ◽  
Visible Light Communications ◽  
New Approach ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Depth Water

Abstract This paper presents a new approach to discover the effect of depth water for underwater visible light communications (UVLC). The quality of the optical link was investigated with varying water depth under coastal water types. The performance of the UVLC with multiple input–multiple output (MIMO) techniques was examined in terms of bit error rate (BER) and data rate. The theoretical result explains that there is a good performance for UVLC system under coastal water.

Sign in / Sign up

Export Citation Format

Share Document