OFDMissa
OFDMissa is a theoretical multi-carrier modulation concept described as an extension of orthogonal frequency-division multiplexing (OFDM). It is proposed to enhance spectral efficiency and robustness in frequency-selective and time-varying channels by incorporating subcarrier windowing, adaptive guard intervals, and enhanced pilot structures for channel estimation. The term appears in academic discussions as a possible variation of OFDM, but it does not represent a widely standardized or commercially deployed technology.
The technical approach of OFDMissa centers on three elements. Subcarrier windowing aims to reduce out-of-band emissions
Potential advantages cited in discussions include improved spectral containment and reduced adjacent-channel leakage, better performance in
Challenges remain, including increased computational complexity and processing latency, the need for standardization and interoperability with
See also OFDM, MIMO, OFDMA, multicarrier modulation, windowing.