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With the rapid incensement of personal vehicles, urban traffics congestion is now a prominent problem in many major cities in China. Electronic Toll Collection (ETC) is an efficient solution for traffic jaw problem. This paper introduces an embedded system designed for Dedicated Short Range Communications (DSRC) standard based ETC system of China. In this system, a STM8L151G micro controller was used...
To satisfy the requirements of complex distributed power electronic system (PES) communication, this paper has proposed a single optic-fiber link data communication protocol based on the Manchester code due to an vacancy in the commonly-adopted protocols, analyzed the encoding and decoding principle of Manchester code, defined the formats of command frame and data frame, calculated the communication...
Polar coding is a low-complexity method for communication over noisy classical channels, which is capable of providing highly reliable data transmission. This paper proposes an enhanced polar codec scheme for mission critical applications in train-to-ground wireless communications. Firstly, we develop an enhanced polar coding scheme to support reliable data transmission under time-varying channel...
The possibility of describing the encoding and decoding procedures Bose-Chaudhuri-Hocquenghem codes using the summation operations modulo 2 is researched. This allows you to simplify these procedures and improve efficiency by correcting the error of the triplicate. There identified coding equations and triangular match tables: the syndrome — the distortion of the position.
In order to improve the throughput of error correction decoding for the high-performance solid-state drives (SSDs), a semi-parallel low-density parity-check (LDPC) decoding architecture is proposed in this paper. The circuit of the LDPC decoder which can be dynamically configured with bit rate and code length is implemented using the scheduling control flow mode of single instruction multiple data...
This paper analyzes the design of a low-cost remote station for the monitoring of the digital terrestrial television channels of the Brazilian Japanese ISDB-Tb (Integrated Services Digital Broadcasting) using software-defined radio and HD decoding hardware (High Definition). The purpose of this station is monitoring the quality of the digital radiofrequency signal received according to the values...
The problem of high-rate space-time block code (STBC) design and transmission is studied in a large multiple-input multiple-output (MIMO) system in Rayleigh fading environment. One attractive feature of large MIMO system is that a huge amount of data can be transmitted from transmitter to the receiver/multiple users. In practical systems, channel state information (CSI) is not available for decoding...
Device-to-device (D2D) communications in cellular networks enable direct transmissions between user equipments (UEs). If the source UE (SUE) and the destination UE (DUE) are far away from each other or the channel between them is too weak for direct transmission, then multi-hop D2D communications, where relay UEs (RUEs) forward the SUE's data packets to the DUE, can be used. In this paper, we propose...
Multithreshold decoders (MTD) for the self-orthogonal codes (SOC) are considered. It is shown that applying of MTD for the well chosen codes provides almost optimum decoding. Noted that MTD using is difficult to provide a low decoding error probability at the a large noise level due to a small code distance of SOC. For reducing the error probability we propose a concatenated coding scheme formed by...
The cellular wireless systems are gaining more attention among other connectivity solutions for supporting machine-type communications (MTC). The efficient support of MTC relies on incorporating new features in the communication networks. Ultra-reliable low-latency communications (URLLC) is one of the considered features that is essential for the support of mission-critical applications, such as industrial...
An amplify-and-forward (AF) wireless relay strategies consisting of dispersed M sources, N relays, and M destinations all equipped with a single antenna is investigated in this paper. The salient objective of this paper is to determine jointly and iteratively the diagonal source-relay precoder and destination decoder matrices under the transmit power constraint at the both sources and relays based...
The main problems of practical use of pseudorandom codes in modern data transmission systems are considered. The existing methods of generating pseudorandom sequences are analyzed. Physical model of pseudorandom codes in Euclidean space is developed. This model is displayed like carriers of code words in the form of pieces of realization of pseudorandom processes with a limited range.
In this article an approach for realization of steganographic embedding by using functional transformation for adaptive positional number is considered.
Underwater acoustic sensor networks (UASNs) are widely used in many application. However, the underwater acoustic channel poses many challenges for reliable data transmission protocol design. In this paper, we propose a new data transmission protocol based on Fountain codes and Selective-repeat ARQ scheme (FSR-ARQ). The new approach utilizes the packet error correction ability of rateless code and...
LTE Release 13 has introduced coverage enhancement (CE) mode "CE Mode B" to support MTC deployments that require medium-to-large CE, compared to the baseline LTE coverage for voice communications. In this paper, we describe the operation of CE Mode B for the supported physical data and control channels, and study the dimensioning of this mode for each of these channels. We provide link-level...
By exploiting temporal-to-spatial domain mapping, we report high-speed spatial light modulation based on conventional spatial light modulators with slow response time. We demonstrate 25-Gbit/s twisted light (orbital angular momentum) encoding/decoding and 260-m security free-space data transmission in the experiment.
We present a passive data telemetry system for real-time monitoring of gastric electrical activity of a living subject. The system is composed of three subsystems: an implantable unit (IU), a wearable unit (WU), and a stationary unit (SU). Data communication between the IU and WU is based on a radio-frequency identification (RFID) link operating at 13.56 MHz. Since wireless power transmission and...
We investigate the effect of radar interference on an uncoded data communication system where the optimal Maximum-A-Posteriori decoder is used and the bandwidth of the radar system is assumed to be much larger than the one of the communication system. Conclusions depend on how the radar interference power, measured by the Interference-to-Noise ratio (INR), compares with the intended signal power,...
Recently, the idea of regularization received a lot of interest in signal processing with ill-conditioned problems. In this paper, instead of using the traditional sphere decoding (LSD) technique, regularized LSD detection techniques have been used for block data transmission systems (BDTS). The first regularization scheme that has been used is Tikhonov regularization (L2-regularization) which is...
The serial communication function of microprocessor is often used in a MCS — 51 microprocessor application system. Because of the influence of the working environment, data will be disturbed and mistake will occur in the process of transmission. In this paper, based on the serial port of the microprocessor, fault-tolerant technology of data communication can be achieved. For the interference problem...
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