Coupling loop multipath channel model with reflection over OFDM-based single frequency network

Author(s):  
Sungho Jeon ◽  
Ho Jin Ryu ◽  
Zungkon Yim ◽  
Sung-Gyu Park ◽  
Jong-Soo Seo
Author(s):  
Masaharu Era ◽  
Kousuke Yamasaki ◽  
Kenji Kawano ◽  
Toshiyuki Mineyoshi ◽  
Shouzou Iwaki ◽  
...  

2011 ◽  
Vol 25 (12) ◽  
pp. 1603-1619 ◽  
Author(s):  
Antonios Alexiou ◽  
Christos Bouras ◽  
Vasileios Kokkinos ◽  
Andreas Papazois ◽  
George Tsichritzis

Author(s):  
A. Lauri ◽  
R. Cardinali ◽  
F. Colone ◽  
P. Lombardo ◽  
T. Bucciarelli

Author(s):  
Noor Nateq Alfaisaly ◽  
Suhad Qasim Naeem ◽  
Azhar Hussein Neama

Worldwide interoperability microwave access (WiMAX) is an 802.16 wireless standard that delivers high speed, provides a data rate of 100 Mbps and a coverage area of 50 km. Voice over internet protocol (VoIP) is flexible and offers low-cost telephony for clients over IP. However, there are still many challenges that must be addressed to provide a stable and good quality voice connection over the internet. The performance of various parameters such as multipath channel model and bandwidth over the Star trajectoryWiMAX network were evaluated under a scenario consisting of four cells. Each cell contains one mobile and one base station. Network performance metrics such as throughput and MOS were used to evaluate the best performance of VoIP codecs. Performance was analyzed via OPNET program14.5. The result use of multipath channel model (disable) was better than using the model (ITU pedestrian A). The value of the throughput at 15 dB was approximately 1600 packet/sec, and at -1 dB was its value 1300 packet/se. According to data, the Multipath channel model of the disable type the value of the MOS was better than the ITU Pedestrian A type.


ETRI Journal ◽  
2014 ◽  
Vol 36 (2) ◽  
pp. 188-196 ◽  
Author(s):  
Myung-Sun Baek ◽  
Yong-Hoon Lee ◽  
Namho Hur ◽  
Kyung-Seok Kim ◽  
Yong-Tae Lee

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