Changes between Version 33 and Version 34 of Other/Summer/2015/aSDR3
- Timestamp:
- Jul 23, 2015, 4:31:41 AM (9 years ago)
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Other/Summer/2015/aSDR3
v33 v34 25 25 Real-world testbed: 26 26 * OAI SW + OAI HW or USRP B210/X300 27 * OAI EPC + OAI eNB < --> COTS UE28 * Commercial/3rd party EPC + OAI eNB < -->COTS UE29 * OAI eNB < -->OAI UE27 * OAI EPC + OAI eNB <–> COTS UE 28 * Commercial/3rd party EPC + OAI eNB <–>COTS UE 29 * OAI eNB <–>OAI UE 30 30 * OAI + Signal generator/spectrum analyzer 31 31 32 32 The source code 33 33 [http://svn.eurecom.fr/openair4G/releases/rel_0.1_26.10.2014/ OpenAir4G] 34 is organized into 6 main repositories for different use cases: OpenAir1, OpenAir2, OpenAir3, OpenAir0, OpenAir -CN, Targets.34 is organized into 6 main repositories for different use cases: OpenAir1, OpenAir2, OpenAir3, OpenAir0, OpenAir–CN, Targets. 35 35 36 36 Each repository focuses on a different data communication layer or focus of 3GPP implementation. … … 72 72 * Open-source real-time Hardware & Software for different Xilinx targets 73 73 74 ===== OpenAir -CN [http://svn.eurecom.fr/openair4G/releases/rel_0.1_26.10.2014/openair-cn/ Code] =====74 ===== OpenAir–CN [http://svn.eurecom.fr/openair4G/releases/rel_0.1_26.10.2014/openair-cn/ Code] ===== 75 75 * 3GPP-EPC implementation 76 76 * Small-scale 3GPP-EPC implementation … … 82 82 === Analyzing Tools === 83 83 ===== Spectrum Analyzer ===== 84 Hardware Spectrum Analyzer -Tektronix SA2600:84 Hardware Spectrum Analyzer – Tektronix SA2600: 85 85 * Wire measurement must be connect with 30dB attenuator in order to avoid saturation 86 86 * Wireless measurement requires much higher gain than using wire … … 96 96 }}} 97 97 98 Software Spectrum Analyzer -RTLSDR Scanner:98 Software Spectrum Analyzer – RTLSDR Scanner: 99 99 * PROS: user-friendly, convenient, remote access, software-based spectrum analyzer 100 100 * CONS: Realtek 2832 EZCap can’t tune to frequencies higher than 1.8GHz … … 120 120 121 121 The relationship between signal, noise, SNR: 122 * noise = variance = mean ( signal -mean ( signal ) )122 * noise = variance = mean ( signal – mean ( signal ) ) 123 123 * noise [dB] = 10 log (noise power) 124 124 * signal [dB] = 10 log (signal power) 125 125 * SNR = signal power / noise power 126 * SNR [dB] = signal [dB] -noise [dB]126 * SNR [dB] = signal [dB] – noise [dB] 127 127 128 128 MATLAB code to measure SNR: … … 206 206 [http://www.signalsresearch.com/Docs/LTE%20U%20SRG_whitepaper_120214.pdf The Prospect Of LTE And Wi-Fi Sharing Unlicensed Spectrum] 207 207 208 [ Coexistence of LTE and WiFi Heterogeneous Networks via Inter Network Coordination]208 [http://www.orbit-lab.org/attachment/wiki/Other/Summer/2015/aSDR3/Sagari_phdForumMobiSys%20(1).pdf Coexistence of LTE and WiFi Heterogeneous Networks via Inter Network Coordination]