Contents
What is a channel in OFDM?
OFDM is a subset of frequency division multiplexing in which a single channel utilizes multiple sub-carriers on adjacent frequencies. In addition the sub-carriers in an OFDM system are overlapping to maximize spectral efficiency. Ordinarily, overlapping adjacent channels can interfere with one another.
Is OFDM used in 2.4 Ghz?
OFDM-based wireless LANs will be implemented in the 2.4GHz ISM band as well as the 5GHz band. OFDM WLANs provide very high data rates, resilience to multipath and extended operating range.
Should I enable OFDM?
The main benefit of OFDMA is that it allows an AP to allocate the whole channel to a single user at a time or it may partition a channel to serve multiple users simultaneously. OFDMA is ideal for low bandwidth applications and results in better frequency reuse, reduced latency, and increased efficiency.
How is channel estimation used in OFDM based plc?
As the channel estimation is one of the crucial problems in OFDM based PLC syste m because of a problematic area of PLC signal attenuation and interference, the improved LS estimation techniq ue is proposed. We investigate and evaluate proposed frequency domain LS channel estimation method for OFDM based power line communication
How to simulate OFDM performance in AWGN channel?
Simulate M-QPSK / M-QAM based cyclic prefixed OFDM over AWGN channel. ● Wireless Communication Systems in Matlab (second edition), ISBN: 979-8648350779 available in ebook (PDF) format and Paperback (hardcopy) format.
What should the number of subchannels be in OFDM?
The number of subchannels is typically set to powers of 2, such as . The size of inverse discrete Fourier transform (IDFT) and discrete Fourier transform (DFT) need to be set accordingly.
Can a MATLAB program simulate an OFDM system?
OFDM system, and investigate how its performance is changed by varying some of its major parameters. This objective is met by developing a MATLAB program to simulate a basic OFDM system. From the process of this development, the mechanism of an OFDM system can be studied; and with a completed MATLAB