What is the major problem on OFDM?
However, OFDM communication systems have two main disadvantages. The first drawback is the high sensitivity to carrier frequency offsets (CFO) and phase noise, while the second and main aspect is the high peak-to-average power ratio (PAPR) of the transmitted signals.
What is OFDM SlideShare?
What are the OFDM system advantages?
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.
What are the advantages of OFDMA?
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.
What are the principles of OFDM?
The OFDM concept is based on spreading the high speed data to be transmitted over a large number of low rate carriers. The carriers are orthogonal to each other and frequency spacing between them are created by using the fast Fourier transform (FFT).
What is the advantage of OFDM over OFDM is?
What is the difference between OFDM and OFDMA?
OFDMA stands for orthogonal frequency division multiplexing access. It is an extension of OFDM. The difference is that OFDMA is multi-user where OFDM is single-user. It has 3x higher throughput than single-user OFDM for short packets of data or multiple endpoints.