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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 6,June 2012
Improved spectral utilization in multi-hop relay networks using frequency reuse for 4G networks
Full Text(PDF, )  PP.971-975  
Author(s)
M.Gopu, Dr. Ritesh Khanna
KEYWORDS
multi hop, frequency reuse, interference cancellation
ABSTRACT
This paper presents a method to improve the spectral utilization in Multi-hop Relay (MMR) networks. Co-channel interference is considered as a parameter to analyze the performance of MMR (IEEE 802.16j) based relay networks. Frequency reuse technique is a way to improve the spectral utilization. Since the same frequency band is used by Relay stations and Base Station, co-channel interference within a cell becomes a major problem. This degrades the uniform Quality of Service (QoS) within the cell. As an effective way to analyze the co-channel interference, signals are retransmitted again by the transmitting stations. From the simulation results it is observed that when the number of mobile stations is increased, signal to interference ratio (SIR) is improved.
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