Is multicell interference coordination worthwhile in indoor wireless broadband systems?

2012 ◽  
Author(s):  
Du Ho Kang ◽  
Ki Won Sung ◽  
Jens Zander
Keyword(s):  
Interference Coordination ◽  
Indoor Wireless ◽  
Wireless Broadband

Indoor Short Range Wireless Broadband Communications Based on Optical Fiber Distribution

2014 ◽  
pp. 244-276
Author(s):  
Haymen Shams
Keyword(s):  
Short Range ◽  
Limiting Factors ◽  
Optical Components ◽  
Broadband Wireless ◽  
Available Bandwidth ◽  
Research Areas ◽  
Indoor Wireless ◽  
Wireless Broadband ◽  
Bandwidth Limitation ◽  
Continuous Demand

There is a continuous demand for increasing wireless access broadband services to the end users, especially with widespread high quality mobile devices. The Internet mobile applications and multimedia services are constantly hungry for broadband wireless bandwidth. In order to overcome this bandwidth limitation, a frequency band (57-64 GHz) has recently been assigned for short range indoor wireless broadband signals due to the large available bandwidth. However, the transmission at this band is limited to a few meters due to the high atmospheric absorption loss. Radio over Fiber (RoF) technology was considered an efficient solution to extend the distribution range and wireless capacity services. This chapter presents an introduction to RoF technology and its basic required optical components for indoor short range wireless millimeter waves (mm-waves). The limiting factors of RoF and its impairments are also described. Moreover, optical mm-wave generation solutions are explained and followed by the recent optical 60GHz activities and upcoming research areas such as THz and optical wireless.

Interference Coordination in 3D MIMO-OFDMA Networks

2014 ◽  
Vol E97.B (3) ◽  
pp. 674-685 ◽  
Author(s):  
Ying WANG ◽  
Weidong ZHANG ◽  
Peilong LI ◽  
Ping ZHANG
Keyword(s):  
Interference Coordination ◽  
3D Mimo ◽  
Ofdma Networks

An Energy-Saving Data Statistics-Driven Management Technique for Bio-Powered Indoor Wireless Sensor Nodes

2021 ◽  
pp. 1-1
Author(s):  
Alejandro Castillo-Atoche ◽  
J. Vazquez-Castillo ◽  
E. Osorio-de-la-Rosa ◽  
J. Heredia-Lozano ◽  
Jaime Aviles Vinas ◽  
...  
Keyword(s):  
Energy Saving ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Management Technique ◽  
Wireless Sensor Nodes ◽  
Indoor Wireless ◽  
Data Statistics

scholarly journals Survey of Millimeter-Wave Propagation Measurements and Models in Indoor Environments

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1653
Author(s):  
Ahmed Al-Saman ◽  
Michael Cheffena ◽  
Olakunle Elijah ◽  
Yousef A. Al-Gumaei ◽  
Sharul Kamal Abdul Rahim ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Measurement Techniques ◽  
Path Loss ◽  
Delay Spread ◽  
Indoor Environments ◽  
Future Trends ◽  
Signal Loss ◽  
Indoor Wireless ◽  
The Future ◽  
Future Demands

The millimeter-wave (mmWave) is expected to deliver a huge bandwidth to address the future demands for higher data rate transmissions. However, one of the major challenges in the mmWave band is the increase in signal loss as the operating frequency increases. This has attracted several research interests both from academia and the industry for indoor and outdoor mmWave operations. This paper focuses on the works that have been carried out in the study of the mmWave channel measurement in indoor environments. A survey of the measurement techniques, prominent path loss models, analysis of path loss and delay spread for mmWave in different indoor environments is presented. This covers the mmWave frequencies from 28 GHz to 100 GHz that have been considered in the last two decades. In addition, the possible future trends for the mmWave indoor propagation studies and measurements have been discussed. These include the critical indoor environment, the roles of artificial intelligence, channel characterization for indoor devices, reconfigurable intelligent surfaces, and mmWave for 6G systems. This survey can help engineers and researchers to plan, design, and optimize reliable 5G wireless indoor networks. It will also motivate the researchers and engineering communities towards finding a better outcome in the future trends of the mmWave indoor wireless network for 6G systems and beyond.

scholarly journals Constant Transmission Efficiency Dimming Control Scheme for VLC Systems

Photonics ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 7
Author(s):  
Jia-Ning Guo ◽  
Jian Zhang ◽  
Gang Xin ◽  
Lin Li
Keyword(s):  
Visible Light Communication ◽  
Transmission Efficiency ◽  
Error Performance ◽  
Constant Weight ◽  
Block Coding ◽  
Control Scheme ◽  
Control Schemes ◽  
Indoor Wireless ◽  
Communication Function ◽  
Dimming Control

As a novel mode of indoor wireless communication, visible light communication (VLC) should consider the illumination functions besides the primary communication function. Dimming control is one of the most crucial illumination functions for VLC systems. However, the transmission efficiency of most proposed dimming control schemes changes as the dimming factor changes. A block coding-based dimming control scheme has been proposed for constant transmission efficiency VLC systems, but there is still room for improvement in dimming range and error performance. In this paper, we propose a dimming control scheme based on extensional constant weight codeword sets to achieve constant transmission efficiency. Meanwhile, we also provide a low implementation complexity decoding algorithm for the scheme. Finally, comparisons show that the proposed scheme can provide a wider dimming range and better error performance.

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