OFDM definition
Examples of OFDM in a sentence
The Multiplex Licensee combines the Main Service Channel, Fast Information Channel and Synchronisation Channel in accordance with ETSI technical specification EN 300 401 to produce OFDM symbols.
When a new switching state is required, the OFDM modulators execute the new subcarrier assignments determined by the centralized controller, and the respective lasers turns on and off to generate new OFDM WDM signals.
For an 8-port SRS resource in a SRS resource set with usage ‘codebook’ or ‘antennaSwitching’ and resource mapping based on TDM with TDM factor s, when the s subsets of ports are mapped onto m ≥ 2 OFDM symbols in a slot according to the pattern {{1, 2, …, s}, …, {1, 2, …, s}} (totally m/s groups of {1, 2, …, s}), the SRS transmissions within each of the m/s groups of {1, 2, …, s} use the same set of subcarriers.
The Multiplex Licensee modulates one or more transmitters using the OFDM symbols produced using the Modulation Service to form the RF Service.
Through a centralized OFDM subcarrier allocation scheme, the WDM channels at each receiver do not have subcarrier contention, so that a single PD can receive all WDM channels simultaneously through the PSD technology.
The received OFDM signal is then demodulated back to the original data format and sent to the appropriate servers through the destination ToR.
For an 8-port SRS resource in a SRS resource set with usage ‘codebook’ or ‘antennaSwitching’ and resource mapping based on TDM with TDM factor s and repetition factor R, when the s subsets of ports are mapped onto m ≥ 2 OFDM symbols in a slot according to the pattern {{1, 2, …, s}, …, {1, 2, …, s}} (totally m/s groups of {1, 2, …, s}), and when cyclic shift hopping is configured for the SRS resource, Option A4: Do not support cyclic shift hopping for 8-port SRS with TDM.
To serve these “super servers” more effectively, the MIMO OFDM DCN architecture can be extended to reserve dedicated OFDM WDM transmitters and dedicated AWGR ports for them.
For an 8-port SRS resource in a SRS resource set with usage ‘codebook’ or ‘antennaSwitching’ and resource mapping based on TDM onto m ≥ 2 OFDM symbols in a slot and with TDM factor s, the s subsets of ports are mapped cyclically as {{1, 2, …, s}, …, {1, 2, …, s}} on the m OFDM symbols.
For an 8-port SRS resource in a SRS resource set ‘antennaSwitching’ (i.e., for 8T8R antenna switching), when the SRS resource is configured with m OFDM symbols (m >= 1), at least support the 8 ports mapped onto each of the m OFDM symbols using legacy schemes (repetition, frequency hopping, partial sounding, or a combination thereof).