TITLE

IMPACT OF A CONCRETE ROOM ON THE PERFORMANCE OF CELLULAR TELEPHONE COMMUNICATIONS FOR LOW BIT RATE APPLICATIONS

AUTHOR(S)
Al Salame, M. S. H.; Al-Mashhadani, Y. S. A.
PUB. DATE
March 2011
SOURCE
Journal of Engineering & Applied Sciences;2011, Vol. 6 Issue 3, p83
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this paper, a new propagation model, in macrocellular wireless communication systems, is derived. The model characterizes the base station to mobile radio channel when the propagated signal is being obstructed by lossy concrete room in which the mobile phone moves. The analysis is performed by using ray-tracing techniques combined with uniform theory of diffraction (UTD), in addition to using a UTD modified heuristic diffraction coefficient for non-perfectly conducting wedges. The maximum considered ray reflections are three, single and double diffractions are also considered in this study. Therefore, all expected significant ray contributions in multipath channel are included. These rays include direct, reflected, refracted and diffracted paths, or any combination of the mentioned paths. The mathematical propagation model is derived, after which the model is implemented by different computer programs written in Matlab. For low bit rate applications (narrowband systems), the attenuation and fading of the propagated signal are the main causes of signal degradation. Therefore, the signal strength, as a function of mobile location inside the room, was computed for base station with an antenna array. The depolarization effect on propagated signal as well as the cumulative distribution function (CDF) and probability density function (PDF), that are useful for statistical prediction models, are studied. Details of the present model that may facilitate implementation are given. Comparison with measurements revealed acceptable agreement. The results of this research work should be useful in radio link design of macrocellular land mobile communication systems.
ACCESSION #
63025890

 

Related Articles

  • An Enhanced Approach for a Prediction Method of the Propagation Characteristics in Korean Environments at 781 MHz. Myoung-Won Jung; Jong Ho Kim; Jae Ick Choi; Joo Seok Kim; Kyungseok Kim; Jeong-Ki Pack // ETRI Journal;Dec2012, Vol. 34 Issue 6, p911 

    In high-speed wireless communications, an analysis of the propagation characteristics is an important process. Information on the propagation characteristics suitable for each environment significantly helps in the design of mobile communications. This paper presents the analysis results of...

  • The Next Frontier: FTEU. Alleven, Monica // Wireless Week;9/1/2008, Vol. 14 Issue 14, p28 

    The article discusses some issues facing Free To End User (FTEU) scheme in wireless communication scheme in the U.S. Accordingly, the FTEU is in trial stage of implementation and the Mobile Marketing Association (MMA) has established guidelines governing it. Some issues unresolved regarding FTEU...

  • KDDI CONTINUES TO LEAD IN NET SUBSCRIBER ADDITIONS.  // Worldwide Telecom;Apr2007, Vol. 19 Issue 4, p4 

    The article offers a look at the increase in the number of mobile subscribers of KDDI in 2007 in Japan. Of the more than one million subscribers who changed their telecommunication service provider between October 24, 2006 and January 31, KDDI has witnessed a net increase of 600,000 3G...

  • Roaming: At last US gets it. Laughlin, Kirk // Wireless Asia;Nov2002, Vol. 5 Issue 10, p6 

    Comments on the global roaming capabilities enjoyed by mobile carriers in the U.S. Concerns regarding the technical complexities of global roaming and the size and the addressable market for the technology; Analysis of pertinent topics and relevant issues; Implications on wireless...

  • A Prolonged Transition. Turner, Brough // Global Telephony;Sep2000, Vol. 8 Issue 8, p46 

    Discusses expected problems in the transition to third-generation wireless systems that promise mobile voice and wideband data communications. Factors contributing to the evolution of mobile telephony; Pervasiveness of Europe's global standard for mobile communications (GSM); Voice-centric...

  • CARRIER INVESTMENTS MOVE TOWARD CONTENT. O'Shea, Dan // Wireless Review;Dec2003, Vol. 20 Issue 12, p28 

    Reports on the shift of telecommunication carrier investments toward content as demonstrated at the Wireless IT and Entertainment event of Cellular Telecommunications and Internet Association in 2004. Improvement in data coverage services; Plan to increase the viability of mobile content...

  • What's Wrong With PHS? Fujimoto, Kyoko // J@pan Inc.;Apr2001, Issue 18, p12 

    Provides information on Personal Handyphone System (PHS), a mobile telephone service in Japan. Prefixes used for PHS and cellphones; Advantages and disadvantages of PHS. INSET: FINGERPRINT READER ON CELLPHONES.

  • U.S. PATIENTLY AWAITS WIRELESS TEXTING THAT'S SOARING OVERSEAS. Riedman, Patricia // Advertising Age;4/15/2002, Vol. 73 Issue 15, ps-6 

    The article reports on the growth of wireless marketing in various countries around the world. The international research group, Ovum, is predicting that global wireless marketing will hit $1 billion by 2003 and $12 billion by 2006. The majority of this marketing will take place in cellular...

  • Confessions Of A Mobile TV Skeptic. Wickham, Rhonda // Wireless Week;3/1/2005, Vol. 11 Issue 5, p6 

    Comments on the innovations that would make television programming on wireless mobile phones. Forecast on the number of subscribers to television programming on mobile phones; Companies that launched services bringing television programming to wireless devices; Standards in mobile television...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics