A common air interface between wide-area cordless telephone and urban cellular radio: Frequency channel doubly-reused cellular systems

1994 ◽  
Vol 77 (8) ◽  
pp. 101-112 ◽  
Author(s):  
Yasuaki Kinoshita ◽  
Toshiki Tsuychiya ◽  
Sinya Ohnuki
Keyword(s):  
Radio Frequency ◽  
Cellular Systems ◽  
Wide Area ◽  
Cellular Radio ◽  
Frequency Channel ◽  
Air Interface ◽  
Cordless Telephone

Power allocation in the context of dimensioning the air-interface of third generation W-CDMA-based cellular systems

2002 ◽  
Vol 15 (5) ◽  
pp. 375-400 ◽  
Author(s):  
P. Demestichas ◽  
G. Kotsakis ◽  
E. Tzifa ◽  
V. Demesticha ◽  
M. Anagnostou ◽  
...  
Keyword(s):  
Power Allocation ◽  
Cellular Systems ◽  
Third Generation ◽  
Air Interface

scholarly journals Analisa Teknis Penetapan Kanal Frekuensi Radio Untuk Lembaga Penyiaran Radio Komunitas Wilayah Kabupaten Batang

2021 ◽  
Vol 5 (2) ◽  
pp. 73-80
Author(s):  
Ari Endang Jayati ◽  
Wahyu Minarti ◽  
Sri Heranurweni
Keyword(s):  
Field Strength ◽  
Radio Frequency ◽  
Economic Value ◽  
Community Radio ◽  
Frequency Channel ◽  
Fm Radio ◽  
Radio Frequency Spectrum ◽  
Limited Frequency ◽  
New Community ◽  
Radio Broadcast

The radio frequency spectrum constitutes a limited and strategic natural resource with high economic value, so it must be managed effectively and efficiently to obtain optimal benefits by observing national and international legal principles. Radio Community Broadcasting Institution uses limited frequency allocation in three channels, namely, in the frequency channels 202 (107.7 MHz), 203 (107.8 MHz), and 204 (107.9 MHz), with limited transmit power and area coverage. The problem in this research is the frequency overlap with other community radios in an area. The issue raised is whether it is possible to establish a new community radio in the Batang Regency area by paying attention to existing radios that have licenses in districts/cities that are in the area directly adjacent to Batang Regency by considering the limited allocation of radio frequency channels community, without the occurrence of radio frequency interference with other community radios. The purpose of this research is to solve these problems. It is necessary to have a policy in determining radio frequency users to get good quality radio broadcast reception. The method used is to analyze the frequency determination technique based on the interference analysis on other community broadcasters. By using the Radio Mobile Software for frequency repetition simulation, in this research, the results show that Batang FM Community Radio does not allow to get frequency channels for community radio operations. After all, it interferes with the Service Area of ​​Soneta FM Radio in Pekalongan City because it does not meet the requirements for determining the frequency channel = Eu> NF, namely the Nuisance Field (NF) value of 109.7 dB is greater than the Minimum Usable Field strength (Eu) of 66 dB. In comparison, Limpung FM Radio gets radio frequency on channel 203 (frequency 107.8 MHz) because it meets the requirements for determining the frequency channel = Eu> NF, namely the Minimum Usable Field strength (Eu) 66 dB greater than the Nuisance Field (NF) of 55.7 dB.

Method about the Authentication Process on the Air Interface of the Tag and the Reader in the Radio Frequency Identification System

2014 ◽  
Vol 528 ◽  
pp. 359-363
Author(s):  
Dong Bo Liu ◽  
Jia Bin Hu ◽  
Chang Cheng Wu
Keyword(s):  
Information Security ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Communication Protocol ◽  
Experimental Results ◽  
New Method ◽  
Identification System ◽  
Air Interface ◽  
Information Safety ◽  
Frequency Identification

As the development radio frequency identification, main researches are mainly focused on the information safety of the air interface, the communication protocol between the tag and the reader. If the air interface is not security, the information cannot be protected, bringing a serious threat to the system security. Although the physical based method can solve this problem in a certain extent, communication safety still cannot be satisfied. Therefore, in order to improve the information safety, this paper introduces a new method about how the tag and the reader authenticate each other. Experimental results show that the proposed method can improve the information security in the authentication process between the tag and the reader on the radio frequency identification system.

scholarly journals RF Driven 5G System Design for Centimeter Waves

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Pekka Pirinen ◽  
Harri Pennanen ◽  
Ari Pouttu ◽  
Tommi Tuovinen ◽  
Nuutti Tervo ◽  
...  
Keyword(s):  
Radio Frequency ◽  
System Design ◽  
Statistical Modeling ◽  
Frequency Band ◽  
Radio Channel ◽  
Concept Development ◽  
Measurement Campaign ◽  
Mobile Broadband ◽  
Air Interface ◽  
Complex Process

5G system design is a complex process due to a great variety of applications and their diverse requirements. This article describes our experiences in developing a centimeter waves mobile broadband concept satisfying future capacity requirements. The first step in the process was the radio channel measurement campaign and statistical modeling. Then the link level design was performed tightly together with the radio frequency (RF) implementation requirements to allow as large scalability of the air interface as possible. We started the concept development at 10 GHz frequency band and during the project World Radiocommunication Conference 2015 selected somewhat higher frequencies as new candidates for 5G. Thus, the main learning was to gain insight of interdependencies of different phenomena and find feasible combinations of techniques and parameter combinations that might actually work in practice, not only in theory.

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