The Effect of Receiver-Side Circular Antenna Arrays on Bit Error Probability in a Wireless Line-of-Sight OAM Communication System

In a communications system, a diversity technique is used to enhance the reliability of a message signal by using at least two channels with different characteristics. In this paper, all four possible scenarios are considered: Single-input and singleoutput (SISO), single input and multi-output (SIMO), multipleinput and single-output (MISO), Multiple-input and multiple output (MIMO) systems. Antenna arrays will be used to reduce BER and improve the performance of the system using array gain in the line of sight channel for 60 GHz frequency in an indoor scenario. Single input and single output are investigated before analysis of multiple inputs and multiple output channel in the line of sight (LOS) and multipath propagation. MATLAB simulation has been performed using BPSK modulation. The comparative studies show that the performance of the MIMO diversity technique is more reliable in terms of BER to improve the performance and efficiency of the communication system.

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A NEW METHOD FOR CALCULATING BIT ERROR PROBABILITY IN OPTICAL SOLITON COMMUNICATION SYSTEM

Acta Physica Sinica ◽

10.7498/aps.46.2401 ◽

1997 ◽

Vol 46 (12) ◽

pp. 2401

Author(s):

HUANG HU-QING ◽

LI FEI

Keyword(s):

Communication System ◽

Error Probability ◽

Optical Soliton ◽

New Method ◽

Bit Error Probability

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An Efficient Weighted Bit-Flipping Algorithm for Decoding LDPC Codes Based on Log-Likelihood Ratio of Bit Error Probability

IEICE Transactions on Communications ◽

10.1587/transcom.2016ebp3376 ◽

2017 ◽

Vol E100.B (12) ◽

pp. 2095-2103 ◽

Cited By ~ 1

Author(s):

Tso-Cho CHEN ◽

Erl-Huei LU ◽

Chia-Jung LI ◽

Kuo-Tsang HUANG

Keyword(s):

Likelihood Ratio ◽

Error Probability ◽

Ldpc Codes ◽

Bit Error Probability ◽

Log Likelihood ◽

Log Likelihood Ratio

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Ratio-based multi-level resistive memory cells

Scientific Reports ◽

10.1038/s41598-020-80121-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Miguel Angel Lastras-Montaño ◽

Osvaldo Del Pozo-Zamudio ◽

Lev Glebsky ◽

Meiran Zhao ◽

Huaqiang Wu ◽

...

Keyword(s):

Error Probability ◽

Resistance Switching ◽

Closed Form Expression ◽

Memory Cells ◽

Resistive Memory ◽

Worst Case ◽

Information Encoding ◽

Bit Error Probability ◽

Multi Level ◽

Switching Devices

AbstractRatio-based encoding has recently been proposed for single-level resistive memory cells, in which the resistance ratio of a pair of resistance-switching devices, rather than the resistance of a single device (i.e. resistance-based encoding), is used for encoding single-bit information, which significantly reduces the bit error probability. Generalizing this concept for multi-level cells, we propose a ratio-based information encoding mechanism and demonstrate its advantages over the resistance-based encoding for designing multi-level memory systems. We derive a closed-form expression for the bit error probability of ratio-based and resistance-based encodings as a function of the number of levels of the memory cell, the variance of the distribution of the resistive states, and the ON/OFF ratio of the resistive device, from which we prove that for a multi-level memory system using resistance-based encoding with bit error probability x, its corresponding bit error probability using ratio-based encoding will be reduced to $$x^2$$ x 2 at the best case and $$x^{\sqrt{2}}$$ x 2 at the worst case. We experimentally validated these findings on multiple resistance-switching devices and show that, compared to the resistance-based encoding on the same resistive devices, our approach achieves up to 3 orders of magnitude lower bit error probability, or alternatively it could reduce the cell’s programming time and programming energy by up 5–10$$\times$$ × , while achieving the same bit error probability.

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