Table 1 Data rate adjustment on each subcarrier according to symbols assigned in bit-map-adjustment ofdm symbols.
From: Efficient MAC Protocol for Subcarrier-Wise Rate Adaptation over WLAN
Symbol on a subcarrier in previous Bit-Map-Adjustment OFDM symbol | Symbol on a subcarrier in current Bit-Map Adjustment OFDM symbol | Data rate adjustment in Bit Map |
|---|---|---|
−1 | −1 | Decrease one level from the previous data rate |
−1 | 1 | Do not change |
1 | −1 | Do not change |
1 | 1 | Increase one level from the previous data rate |