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RF mesh, embedded development - investigation -- 2

$15-30 USD / hour

Chiuso
Pubblicato quasi 4 anni fa

$15-30 USD / hour

We are looking for freelancer specific experience within RF mesh stacks where physical and mac layer should be based on IEEE 802.15.4(g). Currently we are using 2.4 GHz. The development would be on SIlab chips EFR32FG12 and EFR32MG12. You should have some knowledge about different modulations such as • MR-FSK: 2FSK and 4FSK • MR-O-QPSK: DSSS and multiplexed DSSS and what are the pros and cons for different situations. For our main application we use low latency devices so low power is not prio. If you have experienced of the above in combination with 6LoWPAN we are interested. There is a WI-SUN alliance promoting a RF based on IEEE 802.15.4g. We are specifically interested in if you have some experienced of the WI-SUN concept. So we are interested to investigate the possibility to make a full Wi-SUN stack compatible with EFR32FG12 and EFR32MG12. If will be possible to port good open source Wi-SUN solution with RTOS to our platform (MbedOS for example). Or open source RTOS + open source Wi-SUN libraries. So, we interested in implementation of all OSI layers of Wi-SUN. At the application level we interested first in implementation of SNTP, and protocol for OTAP upgrade of devices. We found one open-source Wi-SUN implementation for Cortex-M in the ARM mbed-OS: [login to view URL] If you have any experience there is an advantage. The first step of the project would be to investigate what possibilities and provide more infor about how it works. We need to understand features and limitations. Then if all seem good we can proceed to development.
Rif. progetto: 24734246

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5 proposte
Progetto a distanza
Attivo 4 anni fa

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5 freelance hanno fatto un'offerta media di $21 USD/ora
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Dear Sir, I am an expert with more than 20 years of experience in Firmware development, Programming and PCB Layouts. I have worked in the past on complex communication stacks including TCP/IP, Zigbee, WiFi and several RF proprietary networks. In addition to strong work experience I am a PHD Student with focus on networks. I am fully aware of MAC/Datalink layer and other higher level layers. I know the requirements and functions of MAC layer including CSMA, ALOHA/Slotted Aloha and other shared medium access. I have also worked in the past on Contiki. I am interested in this implementation. I ensure you quality work and satisfaction. I am looking for a quality work to establish long term relations. Regards Talha
$15 USD in 40 giorni
4,9 (20 valutazioni)
5,3
5,3
Avatar dell'utente
Hi, We have already done RF mesh based projects. Surely, we will investigate what possibilities and provide you more information about how it works in the very first step. Kindly spare some time for the interview. My name is Jaspreet & I'm part of larger embedded hardware and firmware development team. We are expert having specialization in Electronic Engineering Design. - Embedded system based on Microcontroller (ATMEGA, AVR, STM8, STM32, MSP430, TMS320, PIC ...) - A system based on development boards(Arduino, Node MCU, Bluechip, Teensy,…) - Analog circuit/RF communication circuit designing and simulation using Proteus, P-Spice, Tina Pro, ADS, CST, Ansys, HFSS - High-Speed layout using HyperLynx - PCB layout designing, providing GERBER and BOMs, 3D files using Altium, EAGLE, Kicad, EasyEDA… - Programming firmware of Microcontroller & C++ I think our many design and practical experiences can help you design your project and give you enough satisfaction. We will be glad to hear from you! Regards, Intellisense Technology
$18 USD in 40 giorni
4,8 (2 valutazioni)
3,6
3,6
Avatar dell'utente
I have a good knowledge on embedded software and firmware. We are looking for freelancer specific experience within RF mesh stacks where physical and mac layer should be based on IEEE 802.15.4(g). Currently we are using 2.4 GHz. The development would be on SIlab chips EFR32FG12 and EFR32MG12. You should have some knowledge about different modulations such as • MR-FSK: 2FSK and 4FSK • MR-O-QPSK: DSSS and multiplexed DSSS
$15 USD in 40 giorni
0,0 (0 valutazioni)
0,0
0,0
Avatar dell'utente
Hi This is interesting project for me. I worked a lot with wireless ism devices. Vaidas
$28 USD in 10 giorni
0,0 (0 valutazioni)
0,0
0,0
Avatar dell'utente
Hi, We are a group of 6 embedded engineers with me leading the group who specialise in wireless communications. I have 18 years expereince working in wireless domain where i have worked on technologies such as lte, wimax, 802.15.4 protocols such as zigbee and thread, wifi, ble, ble mesh, sub ghz band proprietary start and mesh networks, etc. We have used embedded linux as well as rtos on the gateways for these mesh iot networks and rtos and bare metal firmware on thr devices side. we have expereince not only with the functional implementation of the mesh networks but also coding for mesh network quality analysis such as throughput, latency , etc analysis. We can discuss this further where you can give your detailed requirements and I can give a rough idea of how our approach will be, etc to convince you about our capabilities. Regards, Malcolm
$28 USD in 40 giorni
0,0 (0 valutazioni)
0,0
0,0

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Bandiera: SWEDEN
Kungens Kurva, Sweden
4,9
152
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Membro dal ago 12, 2002

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