scholarly journals Broadcast Network Coverage with Multicell Cooperation

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Hongxiang Li ◽  
Samee Ullah Khan ◽  
Hui Liu
Keyword(s):  
Communication Systems ◽  
Theoretical Perspective ◽  
Base Stations ◽  
Wireless Communication Systems ◽  
Network Coverage ◽  
Coverage Area ◽  
Common Information ◽  
Broadcast Network ◽  
Multicell Cooperation ◽  
Outage Probabilities

Multicell cooperation has been identified as one of the underlying principles for future wireless communication systems. This paper studies the benefits of multicell cooperation in broadcast TV network from an information theoretical perspective. We define outage capacity as the figure of merit and derive the broadcast coverage area to evaluate such system. Specifically, we calculate the broadcast coverage area with given common information rate and outage probabilities when multiple base stations collaboratively transmit the broadcast signals. For the general MIMO case where receivers have multiple antennas, we provide simulation results to illustrate the expanded coverage area. In all cases, our results show that the coverage of a TV broadcast network can be significantly improved by multicell cooperation.

Design and Implementation of an Efficient Parallel LFSR Architecture for Wireless Communication Systems

2019 ◽  
Vol 14 ◽  
Author(s):  
A. Suresh Babu ◽  
B. Anand
Keyword(s):  
Wireless Communication ◽  
Power Consumption ◽  
Low Power ◽  
Communication Systems ◽  
High Speed ◽  
Design Tool ◽  
Shift Register ◽  
Linear Feedback ◽  
Wireless Communication Systems ◽  
Coverage Area

: A Linear Feedback Shift Register (LFSR) considers a linear function typically an XOR operation of the previous state as an input to the current state. This paper describes in detail the recent Wireless Communication Systems (WCS) and techniques related to LFSR. Cryptographic methods and reconfigurable computing are two different applications used in the proposed shift register with improved speed and decreased power consumption. Comparing with the existing individual applications, the proposed shift register obtained >15 to <=45% of decreased power consumption with 30% of reduced coverage area. Hence this proposed low power high speed LFSR design suits for various low power high speed applications, for example wireless communication. The entire design architecture is simulated and verified in VHDL language. To synthesis a standard cell library of 0.7um CMOS is used. A custom design tool has been developed for measuring the power. From the results, it is obtained that the cryptographic efficiency is improved regarding time and complexity comparing with the existing algorithms. Hence, the proposed LFSR architecture can be used for any wireless applications due to parallel processing, multiple access and cryptographic methods.

scholarly journals Design and Simulation of Optimal Number of Small Cells Deployment in Fourth-Generation Cellular Networks

2021 ◽  
pp. 583-588
Author(s):  
Mohamed Ibrahim Shujaa ◽  
◽  
Nada Qasim Mohammed ◽  
Moustafa K. Ibrahim ◽  
Qasim Mohammed Hussein
Keyword(s):  
Communication Systems ◽  
Optimal Number ◽  
Small Cell ◽  
Small Cells ◽  
Fourth Generation ◽  
Wireless Communication Systems ◽  
Coverage Area ◽  
New Approach ◽  
Fifth Generation ◽  
Cell Placement

In next-generation of wireless communication systems, Fifth-Generation (5G), small cells deployment is one of the most important issues that must be taking in the account. This paper discusses this issue in three aspects. First, it aims to derive the Critical Handover Location (CHL) point for neighbouring wireless stations which in turn is considered an entrance to the second aspect of this work that decides the small cell placement in one network. Finally, the work proposed a new approach to evaluating the Number of Small Cells (NRS) deployment mathematically. The proposed approach provides the balance in resources allocation in the network in terms of transmitted power of each small cell and their placement in order to provide maximum capacity and coverage area with a lower level of interference between nearest wireless stations thus decreasing the total cost of network insulation.

Power Consumption in Wireless Access Networks

2019 ◽  
pp. 1076-1090
Author(s):  
Vinod Kumar Mishra ◽  
Pankaja Bisht
Keyword(s):  
Power Consumption ◽  
Communication Systems ◽  
Mimo System ◽  
Access Networks ◽  
Base Stations ◽  
Wireless Access ◽  
Total Power ◽  
Mobile Wimax ◽  
Wireless Access Networks ◽  
Coverage Area

Power consumption of mobile devices is a great concern in the current mobile communication systems. Recent analysis by manufacturers and network operators has shown that current wireless networks are not very energy efficient. Power consumption is directly related to the coverage area of the base station. So in this chapter, the authors analyze and compare the total power consumption, power consumption per covered area and ranges of the macrocell, microcell and femtocell base stations for Mobile WiMAX, fixed WiMAX, UMTS, HSPA, LTE for 1x1 SISO systems and mobile WiMAX, HSPA, and LTE will be considered for 2x2 MIMO system. The numerical example will be illustrated with help of simulation results. This chapter enables the reader for knowledge of power consumption in existing wireless access networks technology with current and future trends of research.

scholarly journals Review of Recent Phased Arrays for Millimeter-Wave Wireless Communication

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3194 ◽  
Author(s):  
Aqeel Naqvi ◽  
Sungjoon Lim
Keyword(s):  
Wireless Communication ◽  
Millimeter Wave ◽  
Communication Systems ◽  
Phased Arrays ◽  
Path Loss ◽  
Directional Antennas ◽  
Base Stations ◽  
Wireless Communication Systems ◽  
Data Traffic ◽  
System Architectures

Owing to the rapid growth in wireless data traffic, millimeter-wave (mm-wave) communications have shown tremendous promise and are considered an attractive technique in fifth-generation (5G) wireless communication systems. However, to design robust communication systems, it is important to understand the channel dynamics with respect to space and time at these frequencies. Millimeter-wave signals are highly susceptible to blocking, and they have communication limitations owing to their poor signal attenuation compared with microwave signals. Therefore, by employing highly directional antennas, co-channel interference to or from other systems can be alleviated using line-of-sight (LOS) propagation. Because of the ability to shape, switch, or scan the propagating beam, phased arrays play an important role in advanced wireless communication systems. Beam-switching, beam-scanning, and multibeam arrays can be realized at mm-wave frequencies using analog or digital system architectures. This review article presents state-of-the-art phased arrays for mm-wave mobile terminals (MSs) and base stations (BSs), with an emphasis on beamforming arrays. We also discuss challenges and strategies used to address unfavorable path loss and blockage issues related to mm-wave applications, which sets future directions.

scholarly journals Reconfigurable Magneto-Electric Dipole Antennas for Base Stations in Modern Wireless Communication Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Lei Ge ◽  
Xujun Yang ◽  
Zheng Dong ◽  
Dengguo Zhang ◽  
Xierong Zeng
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Frequency Standard ◽  
Base Station ◽  
Base Stations ◽  
Wireless Communication Systems ◽  
Dipole Antennas ◽  
Base Station Antennas ◽  
Electric Dipole Antennas ◽  
Antenna Characteristics

Magneto-electric (ME) dipole antennas, with the function of changing the antenna characteristics, such as frequency, polarization, or radiation patterns, are reviewed in this paper. The reconfigurability is achieved by electrically altering the states of diodes or varactors to change the surface currents distributions or reflector size of the antenna. The purpose of the designs is to obtain agile antenna characteristics together with good directive radiation performances, such as low cross-polarization level, high front-to-back ratio, and stable gain. By reconfiguring the antenna capability to support more than one wireless frequency standard, switchable polarizations, or cover tunable areas, the reconfigurable ME dipole antennas are able to switch functionality as the mission changes. Therefore, it can help increase the communication efficiency and reduce the construction cost. This shows very attractive features in base station antennas of modern wireless communication applications.

scholarly journals ANALYSIS OF COLLECTION METHODS AND MATHEMATICAL PROCESSING OF HETEROGENEOUS INFORMATION ON THE CONDITION OF THE NETWORK COVERAGE AREA OF A COMMUNICATIONS OPERATOR

2019 ◽  
pp. 108-122 ◽  
Author(s):  
Natalia Sergeevna Maltseva ◽  
Alexander Aleksandrovich Sorokin ◽  
Pham Khac Trong
Keyword(s):  
Marketing Research ◽  
The State ◽  
Base Stations ◽  
Network Coverage ◽  
Coverage Area ◽  
Continuous Increase ◽  
Heterogeneous Information ◽  
Verbal Form ◽  
Technical Parameters ◽  
Processing Information

The article analyzes the methods and means of collecting, identifying and processing information related to technical, social and economic parameters of network coverage area. One of the trends in the telecommunications market is a continuous increase in the volume of transmitted traffic while maintaining indicators such as the average revenue per subscriber and the total number of subscribers for telecom operators. Taking into account the analysis of development trends in order to preserve the profitability of work, telecom operators need to increase the efficiency of their work by reducing the cost of maintaining the infrastructure and promoting new services. To solve these problems, it is necessary to use various types of information gathering about the state of the network coverage of a provider. The analysis of methods for collecting information on the network coverage revealed three main types. The first relates to the methods of collecting technical parameters of communication channels between the base stations of the operator and subscriber equipment. The second consists in collecting information on subscriber complaints about the service quality by means of the customer interaction service. The third is conducting marketing research to predict the needs of subscribers for new services. The results of the analysis show that the greatest difficulties in collecting and processing information are related to the complex identification of the network coverage area, taking into account technical and socio-economic factors. The difficulties have been caused by the limitations of the available technical means for analyzing the state of the network coverage area to an integrated generalization of heterogeneous information. According to the analysis results of theoretical methods, it has been stated that using the methods of the theory of fuzzy sets is most appropriate for generalizing the information presented in numerical and verbal form.

scholarly journals Radio Frequency over Fibre Optics Repeater for Mission-Critical Communications: Design, Execution and Test

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 612
Author(s):  
Răzvan-George Bărtuşică ◽  
Mădălin Mihai ◽  
Simona Halunga ◽  
Octavian Fratu
Keyword(s):  
Radio Frequency ◽  
Communication Systems ◽  
Cost Effective ◽  
Mobile Radio ◽  
Base Stations ◽  
Technical Solution ◽  
Coverage Area ◽  
Fibre Optics ◽  
Mission Critical ◽  
Emergency Scenarios

This paper presents a technical solution that addresses mission-critical communications by extending the radio frequency coverage area using a flexible and scalable architecture. One of the main objectives is to improve both the reaction time and the coordination between mission-critical practitioners, also called public protection and disaster relief users, that operate in emergency scenarios. Mission-critical services such as voice and data should benefit from reliable communication systems that offer high availability, prioritization and flexible architecture. In this paper, we considered Terrestrial Trunked Radio (TETRA), the mobile radio standard used for mission-critical communications, as it has been designed in this respect and is widely used by first responder organizations. Even if RF coverage is designed before network deployment and continuously updated during the lifetime of the technology, some white areas may exist and should be covered by supplementary base stations or repeaters. The model presented in this paper is an optical repeater for TETRA standard that can offer up to 52.6 dB downlink, 65.6 dB uplink gain and up to 3.71 km coverage distance in a radiating cable installation scenario. The design in not limited, as it can be extended to several different mobile radio standards using the same principle. Flexibility and scalability attributes are taken into consideration, as they can build a cost-effective deployment considering both capital and operational expenditures.

Power Consumption in Wireless Access Networks

2018 ◽  
pp. 6253-6265
Author(s):  
Vinod Kumar Mishra ◽  
Pankaja Bisht
Keyword(s):  
Power Consumption ◽  
Communication Systems ◽  
Mimo System ◽  
Future Trend ◽  
Access Networks ◽  
Base Stations ◽  
Wireless Access ◽  
Mobile Wimax ◽  
Wireless Access Networks ◽  
Coverage Area

Power consumption of mobile devices is a great concern in the current mobile communication systems. Recent analysis by manufacturers and network operators has shown that current wireless networks are not very energy efficient. Power consumption is directly related to the coverage area of the base station. So in this chapter, we will analyze and compare the total power consumption, power consumption per covered area and ranges of the macrocell, microcell and femtocell base stations for Mobile WiMAX, fixed WiMAX, UMTS, HSPA, LTE for 1x1 SISO systems and mobile WiMAX, HSPA and LTE will be consider for 2x2 MIMO system. The numerical example will be illustrated with help of simulation results. This chapter enables the reader for knowledge of power consumption in existing wireless access networks technology with detailed of current and future trend of research.

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