Performance evaluation of a power amplification technique for OFDM transmission

It is currently recognized that multicarrier modulation schemes, also known as OFDM schemes (orthogonal frequency division multiplexing), offer many advantages for signalling at high data rates over time dispersive channels. However, they exhibit strong envelope fluctuations, which implies power amplification difficulties. We evaluate the performance trade-offs with a two-branch combining technique for “quasi-linear” power amplification of OFDM signals. We evaluate the performance of the proposed technique for a specific ATM-based wireless indoor system