Figure 5
From: Performance evaluation of variable transmission rate OFDM systems via network source coding
The performance of the proposed VTR-MB-OFDM system in the noiseless channel using two different mapping functions. (a) with switch configurations [S 1 S 2 S 3 S 4] = [x x x x]. (b) with switch configurations [S 1 S 2 S 3 S 4] = [x x x x]. ’x’ means ’0’ or ’1’. Therefore, 16 different switch configurations [S 1 S 2 S 3 S 4] are considered.