Paper Info
Title
Two Frequency Reuse Schemes in OFDMA-TDD Based Two-Hop Relay Networks
Abstract
Frequency reuse scheme is extremely important in multi-hop relay networks (MRNs), because some extra frequency resource should be elaborately allocated to Relay Stations (RSs). However the time and spatial reuse characteristics of RS should be taken into account in order to mitigate the co-channel interference. This paper presents two adaptive frequency reuse schemes for MRN by using different reuse patterns in different time zones of the same frame. In our schemes, reuse pattern of 1×3×1 is applied in the Relay Zone (RZ), and 1×3×3 is applied in the Access Zone (AZ). The former allows only the two RSs which are located farthest apart in one cell to share the same frequency portion; while in the latter two adjacent RSs may share the same resources. Analysis and simulation results show that both schemes improve the system throughput greatly. The comparison of coverage and throughput between the two schemes indicates that the latter scheme has better performance and an aggressive full reuse scheme could be utilized to all RSs.
Year
DOI
Venue
2010
10.1109/WCNC.2010.5506111
WCNC
Keywords
Field
DocType
1x3x1,1x3x3,frequency reuse,two-hop relay,interference,throughput,wimax,co channel interference,signal to noise ratio,ofdm modulation,frequency,spread spectrum communication,antennas,ofdm,phase shift keying
Reuse,Computer science,Computer network,WiMAX,Interference (wave propagation),Throughput,RSS,Orthogonal frequency-division multiplexing,Relay,Spread spectrum
Conference
ISSN
ISBN
Citations 
1525-3511
978-1-4244-6396-1
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Zhengguang Zhao172.06
Xuming Fang230736.84
Ying Zhu300.34
Yan Long4396.41