AMC Design for Wideband OFDM Maintaining Target Quality over Time-Varying Channels

We propose a new adaptive modulation and coding (AMC) design for wideband orthogonal frequency division multiplex (OFDM), which is called "stable quality - subcarrier-wise AMC" (SQ-SAMC). In SQ-SAMC, a modulation and coding scheme (MCS) with respect to each subcarrier is selected in consideration of the channel variation and the expectation of the carrier-to-noise power ratio (CNR). Our simulation demonstrates that SQ-SAMC firmly maintains the target block error rate (BLER) and achieves a higher throughput than conventional SAMC under a quasi-static condition at a radio frequency of 5 GHz and round trip time of 5 ms. Furthermore, even in typical pedestrian cases, it satisfies the target BLER, which was never possible using conventional SAMC.