High Speed Ethernet Interface between TE and MT in 3GPP LTE Network

2009 ◽  
Author(s):  
Yong-Soo Baek ◽  
Sung-Gi Min ◽  
Hyun-Gu Lee
Keyword(s):  
High Speed ◽  
3Gpp Lte ◽  
Lte Network ◽  
Ethernet Interface

Application of Signal Processing in GPS Signal Detection Using USRP

2017 ◽  
Vol 9 (2) ◽  
pp. 26-36 ◽  
Author(s):  
Ehsan Sheybani ◽  
Giti Javidi
Keyword(s):  
Signal Analysis ◽  
High Speed ◽  
Software Radio ◽  
Surrounding Area ◽  
Gigabit Ethernet ◽  
The World ◽  
Quadrature Phase ◽  
Simple Extraction ◽  
Programming Software ◽  
Ethernet Interface

The Universal Software Radio Peripheral (USRP) is slowly becoming a very popular piece of hardware used in different universities and research labs across the world. It is inexpensive, which attracts a lot of attention, along with its variety of applications and capabilities. The USRP connects to a host-computer through a high-speed USB or Gigabit Ethernet interface. Another reason for the increasing popularity of the USRP is its ability to respond to multiple programming software such as GNU Radio, Matlab/Simulink, and LabView. There is a broad range of capabilities of the USRP one of which includes receiving GPS signals. Each GPS satellite transmits data on two frequencies, L1 (1575.42 MHz) and L2 (1227.60 MHz). We focused on the L1 band that transmits at 1575.42 MHz. The main objective was to engage in signal analysis with the carrier signal of the L1 band. This task proved to be challenging but not impossible. The carrier signal is essentially to carry information modulated on to it; in this case the navigation message from the GPS satellite along with other codes that are irrelevant to use at this point. After receiving the signal via USRP and with a simple extraction of the carrier signal, we were able to record the signal and reconstruct it using its In-phase and Quadrature phase (IQ) data. With just the carrier signal, one is able to do multiple things. One can modulate his/her own information onto the signal and transmit it through the USRP. Further analysis on the characteristics of the signal can be done. For example, one can compare the strength of a direct to the indirect signal. In theory, one can determine the characteristics of the surrounding area when comparing direct and indirect carrier signal. The possibilities are endless.

scholarly journals Analysis of Mobility Impacts on LTE Network for Video Streaming Services using Distributed Antenna System

2017 ◽  
Vol 1 (02) ◽  
pp. 79
Author(s):  
Hasanah Putri ◽  
Tri Nopiani Damayanti ◽  
Rohmat Tulloh
Keyword(s):  
Video Streaming ◽  
High Speed ◽  
Antenna System ◽  
User Mobility ◽  
Distributed Antenna System ◽  
Lte Network ◽  
Distributed Antenna ◽  
Wide Range ◽  
Streaming Services

LTE (Long Term Evolution) is a Broadband Wireless Access (BWA) technology that allows high speed and a wide range of access. LTE is designed to meet the needs for Quality of Service (QoS), i.e. the ability to download up to 300 Mbps and upload up to 75 Mbps. This study investigated the impacts of user mobility on the LTE network for video streaming services. The approach employed in this study included multi-user with Distributed AntennaSystem (DAS) and various variations of user mobility speed. Observations were made on the condition of the user moving from one cell to another so that the handover occurred. The throughput value will increase by 33% and 47% when the user’s distances are respectively 1250 m and 2000 m from eNode B. In addition, the delay value will reduce by 66.32% an 67.58% when the user’s distances are respectively 1250 m and 2000 m from eNode B. Moreover, the PDR value will increase by 48.74% and 55.45% when the user’s distances are respectively 1250 m and 2000 m from eNode B. The use of a distributed antenna system (DAS) model on LTE network has resulted in improved quality of performance when the user streams a video.

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