ofdm การใช้

• Mainly, the sidelobe levels of W-OFDM are lower.
• The modulated sub-carriers are summed to form an OFDM signal.
• OFDM is a step beyond wavelength-division multiplexing ( WDM ).
• See the OFDM system comparison table for further numerical details.
• OFDM systems split the transmitted signal into multiple orthogonal sub-carriers.
• FFTs also enable OFDM to make efficient use of bandwidth.
• In an OFDM system, the baseband signal consists of several subcarriers.
• OFDM has become an interesting technique for power line communications ( PLC ).
• DVB-S ( ( C ) OFDM and can support hierarchical modulation.
• The receiver employs a DFT ( as is typical in OFDM ) to produce
• The company began shipping the world s first MIMO-OFDM chipsets in 2003.
• In OFDM, the beginning of each symbol is preceded by a guard interval.
• Arogyaswami Paulraj founded Iospan Wireless in late 1998 to develop MIMO-OFDM products.
• Despite the different names all standards rely upon OFDM for modulation .-->
• Fifty five companies attended the meeting and formed the OFDM Forum in March 2000.
• Flash OFDM is one of two commercially successfully launched solely data networks in the world.
• The technology used is OFDM sampled at 400 kHz with adaptative modulation and tone mapping.
• There is a window time T WGI included both before and after each OFDM symbol.
• OFDM and OFDMA with DCA is often studied as an alternative for 4G wireless systems.