نتایج جستجو برای: co channel interference

تعداد نتایج: 633616  

In this paper, a more realistic cognitive radio network is proposed which considers several secondary links, some secondary relays, and one primary link. In the network, there are two steps of transmission from secondary sources to secondary destinations. At the first step, when primary link is idle, all of the secondary sources simultaneously broadcast their information to the relays. At the s...

2007
Haris Haralambous Harris Papadopoulos Lefteris Economou

This paper presents the application of Neural Networks as a means of optimising the reliability of HF groundwave communication systems by predicting the detrimental effect of interference from other users. In the design and performance evaluation of such systems, it is essential to use realistic models of co-channel interference. In response to this demand, the development of a long-term predic...

2001
Vincent A. Nguyen Peng-Jun Wan Ophir Frieder

In previous work, we presented a novel Channel Alternation and Rotation (CAR) scheme that coordinates channel assignment with antenna directivities. In CAR, each cell type is allocated an extra channel set that provides network designer the flexibility to alternate and rotate channels according to nearest front lobe interference avoidant strategy to enhance co-channel interference ratio (C/I). ...

2005
Aliye Özge Kaya

This article mainly discusses about co-channel interference and outage probability. It also gives a comparison of small fading components. Additionally shadowing is discussed and some terminology related to modulated signals is explained.

2007
Jong-Moon Chung Hyung-Weon Cho Ki-Yong Jin Min-Hee Cho

In this paper, we present an analytical framework for the evaluation of the uplink performance of multihop cellular networks based on dynamic time division duplex (TDD). New wireless broadband protocols, such as WiMAX, WiBro, and 3G-LTE apply TDD, and mobile communication protocols under standardization (e.g., IEEE802.16j) are investigating mobile multihop relay (MMR) as a future technology. In...

2010
T.S.JEYALI LASEETHA

Smart antenna using multiple antennas exploring the SDMA technology has been used in wireless communication systems which provides higher spectrum efficiency, improved link quality and throughput through frequency reuse, reduction of intersymbol interference (ISI) and co-channel interference rejection (CCI)[1]. Space Division Multiple Access, where multiple user signals are simultaneously trans...

Journal: :The Journal of the Korean Institute of Information and Communication Engineering 2011

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