Multi-Carrier Modulation Techniques for Bandwidth Efficient Communication Systems

2003 ◽  
Vol 49 (4) ◽  
pp. 227-233
Author(s):  
Nnssrk Prasad ◽  
K Preeti ◽  
G K Bhavani ◽  
V Shameem ◽  
Pnap Rao
Keyword(s):  
Communication Systems ◽  
Modulation Techniques ◽  
Efficient Communication

Terahertz direct modulation techniques for high-speed communication systems

2021 ◽  
Vol 18 (5) ◽  
pp. 221-244
Author(s):  
Tianchi Zhou ◽  
Yaxin Zhang ◽  
Bo Zhang ◽  
Hongxin Zeng ◽  
Zhiyong Tan ◽  
...  
Keyword(s):  
Communication Systems ◽  
High Speed ◽  
Direct Modulation ◽  
Modulation Techniques

Power Management Technique for Energy-Efficient Communication Systems in Telemedicine

2021 ◽  
pp. 115-143
Author(s):  
K. Sujatha ◽  
N. P. G. Bhavani ◽  
Rajeswary Hari ◽  
K. Senthil Kumar ◽  
N. Jayachitra ◽  
...  
Keyword(s):  
Power Management ◽  
Energy Efficient ◽  
Communication Systems ◽  
Management Technique ◽  
Energy Efficient Communication ◽  
Efficient Communication

scholarly journals Simulating the Performance Characteristic of Passband Modulation Techniques in MATLAB Environment

2016 ◽  
Vol 9 (4) ◽  
pp. 52
Author(s):  
Saed Ali Thuneibat
Keyword(s):  
Communication Systems ◽  
Multiple Access ◽  
Digital Communication ◽  
Simulation Software ◽  
Mathematical Language ◽  
Block Coding ◽  
Modulation Techniques ◽  
Clear Result ◽  
High Level ◽  
Digital Communication Systems

<p>Now days, digital communication systems become complex and sophisticated. Not all vendors, if any, can understand the system and components of system that represent different modulation techniques, line and block coding, multiplexing and multiple access.</p><p>They need the conclusion about which of modulation techniques is the suitable for transmission and in the same time can save the power and bandwidth.</p><p>Engineers can study and analyze the modulation techniques and then compare between them to give such conclusion using modeling and simulation.</p><p>MATLAB is a high level mathematical language for technical computing.</p><p>In this paper we use MATLAB environment as simulation software to give on display a clear result that used to compare between two digital Passband modulation techniques BPSK and QPSK, and pinpoint the performance of the two techniques over selected parameters.</p>

scholarly journals Review of the Multicarrier Modulation Techniques used in Modern Wireless Communications

Telecom IT ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 55-66
Author(s):  
I. Grishin ◽  
A. Kalinkina
Keyword(s):  
Communication Networks ◽  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
Filter Bank ◽  
Multicarrier Modulation ◽  
Wireless Communication Networks ◽  
Frequency Division ◽  
Radio Communication ◽  
Modulation Techniques ◽  
Radio Signals

This article provides an overview of the technologies for generating radio signals, such as orthogonal frequency division multiplexing and its modifications: universal filtered multicarrier and filter bank multi-carrier currently used in wireless communication networks. Subject of research: methods of multicar-rier modulation. Main results: Overview of modern methods of forming multicarrier signals in radio communication systems. A number of computational experiments have been performed to compare the characteristics of signal localization, peak-to-average ratios and spurious emissions. Practical implica-tions: the results can be used in choosing the type of modulation in the case of the development of digi-tal radio communication systems.

Open Threads-Enabled Mesh Networks in Vehicles for Real-Time Traffic Monitoring

2020 ◽  
pp. 120-143
Author(s):  
Parul Choudhary ◽  
Rakesh kumar Dwivedi ◽  
Umang Singh
Keyword(s):  
Traffic Congestion ◽  
Communication Systems ◽  
Mesh Networks ◽  
Traffic Monitoring ◽  
Mesh Network ◽  
Real Time Traffic ◽  
Innovative Solutions ◽  
Efficient Communication ◽  
Adaptive Solution ◽  
Inter Communication

The exponential increase of traffic on roads has led to numerous disastrous consequences. These issues demand an adaptive solution that ensures road safety and decreases the traffic congestion on roads. New paradigms such as Cloud computing and internet of things are aiding in achievement of the inter-communication among the vehicles on road. VANETs are designed to provide effective and efficient communication systems to develop innovative solutions but are restricted due to mobility constraints. This chapter proposes an IP-based novel framework composed of open threads integrated with VANETs exchanging information to create a mesh network among vehicles. This novel Open Threads-based infrastructure can help in achieving a more economical, efficient, safer, and sustainable world of transportation which is safer and greener. This chapter also discusses and compares various thread-enabled microcontrollers by different vendors that can be utilized to create a mesh network.

scholarly journals A Review On FSO By Using Different Modulation Techniques

2018 ◽  
Vol 7 (3.8) ◽  
pp. 136
Author(s):  
Rajan Miglani ◽  
Sachal Charak ◽  
Sandeep Kumar Arora ◽  
Mahedi Masud
Keyword(s):  
Free Space ◽  
Atmospheric Condition ◽  
Free Space Optics ◽  
Space Optics ◽  
Rf Communication ◽  
Modulation Techniques ◽  
Efficient Communication ◽  
Atmospheric Channel ◽  
Better Than

Now a days as we are seeing that the free space optics is one of the emerging technology used for the replacement of the radio frequency wireless communication, due to their advantages over it like cost, speed, bandwidth, minimum error as well as efficient communication. The quality of services provided by the FSO is far better than the RF communication network. The free space optics is unlicensed band which make it less costly than the licensed band technology. As the atmospheric channel is used for transmission the effects of atmospheric condition effects the communication. In this paper we try to discuss all the modulation schemes which help to improve the performances of the optic system. 

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