OFDM - Orthogonal Frequency Division Multiplexing

Key Features

Configure and create complete multiple OFDM Frames with Preamble, Header, and Payload
Preset for Standard compliant Frames for various wireless standards like Wi-Fi, WiMAX
Define Frame with Preamble, Header, and Payload (selectively) to simulate different OFDM signals
Configure Symbols with Data, Pilot and Guard sub carriers with different base pattern type, amplitude profile and phase offsets
Subcarrier Modulation Formats including BPSK, QPSK, QAM (16, 32, 64, 256, 512, 1024), and 8-PSK
Add Impairments such as Phase Noise and Multipath to simulate realistic propagation scenarios
Define Frequency Hopping and Gated Noise to simulate practical environments for receiver testing

Immunity to selective fading: One of the main advantages of OFDM is that is more resistant to frequency selective fading than single carrier systems because it divides the overall channel into multiple narrowband signals that are affected individually as flat fading sub - channels.
Resilience to interference: Interference appearing on a channel may be bandwidth limited and, in this way, will not affect all the sub - channels. This means that not all the data is lost.
Spectrum efficiency: Using close-spaced overlapping sub-carriers, a significant OFDM advantage is that it makes efficient use of the available spectrum.
Resilient to ISI: Another advantage of OFDM is that it is very resilient to inter-symbol and inter-frame interference. This results from the low data rate on each of the sub-channels.
Resilient to narrow-band effects: Using adequate channel coding and interleaving it is possible to recover symbols lost due to the frequency selectivity of the channel and narrow band interference. Not all the data is lost.
Simpler channel equalisation: One of the issues with CDMA systems was the complexity of the channel equalisation which had to be applied across the whole channel. An advantage of OFDM is that using multiple sub-channels, the channel equalization becomes much simpler.