Narrow-Band, Low Data Rate Communications on the Low-Voltage Mains in the CENELEC Frequencies, Part 2: Multiplicative Signal Fading and Efficient Modulation Schemes

2002 ◽  
Vol 22 (4) ◽  
pp. 76-76
Author(s):  
D. Cooper ◽  
T. Jeans
Keyword(s):  
Low Voltage ◽  
Narrow Band ◽  
Data Rate ◽  
Modulation Schemes ◽  
Signal Fading

scholarly journals Application of Ultra Narrow Band Modulation in Enhanced Loran System

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4347
Author(s):  
Boyun Lyu ◽  
Yu Hua ◽  
Jiangbin Yuan ◽  
Shifeng Li
Keyword(s):  
Narrow Band ◽  
Data Rate ◽  
Modulation Method ◽  
Phase Shift Keying ◽  
Spectrum Utilization ◽  
Frequency Domains ◽  
Shift Keying ◽  
Modulation Methods ◽  
Binary Phase Shift Keying ◽  
Signal Time

The Enhanced Loran (eLoran) system is valued for its important role in the positioning, navigation, and timing fields; however, with its current modulation methods, low data rate restricts its development. Ultra narrow band (UNB) modulation is a modulation method with extremely high spectrum utilization. If UNB modulation can be applied to the eLoran system, it will be very helpful. The extended binary phase shift keying modulation in UNB modulation is selected for a detailed study, parameters and application model are designed according to its unique characteristics of signal time and frequency domains, and it is verified through simulation that the application of this modulation not only meets the design constraints of the eLoran system but also does not affect the reception of the respective signals of both parties. Several feasible schemes are compared, analyzed, and selected. Studies have revealed that application of UNB modulation in the eLoran system is feasible, and it will increase the data rate of the system by dozens of times.

Design and Implementation of OFDM Modem for Low Voltage Narrowband Powerline Communication

2012 ◽  
Vol 505 ◽  
pp. 257-262
Author(s):  
Sheng Qing Zhang ◽  
Yi Feng Zhang ◽  
Zhao Li ◽  
Cai Rong Zou
Keyword(s):  
Low Voltage ◽  
Data Rate ◽  
Test Results ◽  
Powerline Communication ◽  
Module Design ◽  
Design And Implementation ◽  
Potential Market ◽  
Communication Module ◽  
Actual Test

Narrowband powerline communication has the great potential market application like Auto-Meter-Reading (AMR). This paper focuses on the design and implementation of narrowband powerline communication module with the OFDM technology. Firstly, it introduces the OFDM solution for low voltage powerline communication module design, then it describes the implementation of the sync module, Viterbi code translation module and FFT module based on FPGA platform in details. Finally, it provides the actual test results for the communication module. It shows, the communication data rate of the narrowband powerline communication is greatly improved with OFDM technology.

scholarly journals Pulse Edge-Only Signaling Method Comparison for Wireline Interconnects

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Dmitriy Garmatyuk ◽  
Kyle Kauffman ◽  
Andrew Martwick
Keyword(s):  
Transmission Lines ◽  
Environmental Conditions ◽  
High Speed ◽  
Narrow Band ◽  
Method Comparison ◽  
Electrical Transmission ◽  
Frequency Dependent ◽  
Channel Loss ◽  
Modulation Schemes ◽  
Modulation Methods

Typical high-speed electrical transmission lines use a variety of precoding and equalization techniques to counter the frequency-dependent channel loss and environmental conditions such as ISI. In this paper, we suggest a relatively narrow-band signaling method that is resilient to the effects of ISI and crosstalk and can be implemented with existing technology. Alternative modulation schemes are analyzed in terms of effectiveness, performance, and cost. In particular, line-encoded and on-off keyed modulation methods are evaluated in simulations of transmission lines to gauge effectiveness in high-speed conditions with limiting ISI.

CHAOTIC MODULATION FOR ROBUST DIGITAL COMMUNICATIONS OVER MULTIPATH CHANNELS

2000 ◽  
Vol 10 (04) ◽  
pp. 695-718 ◽  
Author(s):  
MICHAEL PETER KENNEDY ◽  
GÉZA KOLUMBÁN ◽  
GÁBOR KIS
Keyword(s):  
Narrow Band ◽  
Local Area Networks ◽  
Wide Band ◽  
Local Area ◽  
Wireless Local Area Networks ◽  
Basis Functions ◽  
Modulation Scheme ◽  
Digital Modulation ◽  
Modulation Schemes ◽  
Band Signal

This tutorial work identifies the characteristic properties of chaotic digital modulation schemes and shows how the unique features of chaotic basis functions can be exploited to competitive advantage in selected application domains. Two robust noncoherent chaotic digital modulation schemes (DCSK and FM-DCSK) are described in detail and the performance of FM-DCSK is examined critically for communication channels where systems using conventional coherent and narrow-band modulation schemes fail. Since the FM-DCSK signal is a wide-band signal and its demodulation is performed without synchronization, the FM-DCSK modulation scheme is especially suitable for operation in multipath channel such as Wireless Local Area Networks (WLANs).

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