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Audio Modem Communication Library — amodem latest ...
http://amodem.readthedocs.io/en/latest/README.html
The modem is using OFDM over an audio cable with the following parameters: Sampling rate: 8/16/32 kHz; Baud rate: 1 kHz; Symbol modulation: BPSK, 4-PSK, 16-QAM, 64-QAM, 256-QAM; Carriers: 2-11 kHz (up to ten carriers) This way, modem may achieve 80kbps bitrate = …
GitHub - aicodix/modem: Simple OFDM modem for …
https://github.com/aicodix/modem
Simple OFDM modem for transceiving datagrams. Contribute to aicodix/modem development by creating an account on GitHub. ... Encode file uncoded.dat to encoded.wav WAV audio file with 8000 Hz sample rate, 16 bits and only 1 (real) channel:./encode encoded.wav 8000 16 1 …
The Top 2 Modem Ofdm Open Source Projects on Github
https://awesomeopensource.com/projects/modem/ofdm
Simple OFDM modem for transceiving datagrams. 1-2 of 2 projects. Related Projects. Modem Projects (130) C Modem Projects (26) Python Modem Projects (24) ... Audio Modem Projects (3) Jupyter Notebook Ofdm Projects (3) Python Wireless …
A Survey on DSP Implementation of OFDM UW Acoustics Modem ...
https://www.ijert.org/a-survey-on-dsp-implementation-of-ofdm-uw-acoustics-modem
Orthogonality property: Orthogonal Frequency Division Multiplexing (OFDM) is a type of multicarrier modulation scheme in which the data bits are divided into several different bit streams in parallel, which are then transmitted using overlapping sub-carriers shown in fig.2 .It is possible to send out orthogonal signals (i.e. sin(t) and cos(t)) at the same frequency without …
OFDM and OFDMA | The value added and what it means …
https://broadbandlibrary.com/ofdma/
OFDM and OFDMA look quite similar from an initialism [1] standpoint, but in fact are used very differently in DOCSIS 3.1 and 4.0. OFDM is used in the downstream and is a common channel shared by all compatible cable modems. OFDMA is used in the upstream by cable modems transmitting data to the CMTS. OFDMA is a time- and frequency-shared medium ...
Orthogonal Frequency Division Multiplexing (OFDM) Modulation
https://www.vocal.com/video/ofdm-modulation/
Orthogonal Frequency Division Multiplexing (OFDM) modulation is an essential part of many communication and broadcasting systems. DVB-T (Digital Video Broadcasting for terrestrial television ) uses OFDM as a key principle for digital video modulation.
Orthogonal frequency-division multiplexing - Wikipedia
https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing
In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission and a method of encoding digital data on multiple carrier frequencies. OFDM has developed into a popular scheme for wideband digital communication , used in applications such as digital television and audio broadcasting, DSL internet access , wireless networks , power …
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