Patent ID: 9729268
Date: 2017-08-08
CPC Classifications: H04L,H04W

Claim:
1. A wireless communication device comprising a memory; and, a multi-modulation and coding schemes (MCS) orthogonal frequency division multiplexed (OFDM) transmitter coupled to the memory, wherein the multi-MCS OFDM transmitter comprises: at least one radio frequency (RF) chain associated with a single transmit antenna; and a variable gain element associated with the at least one of the RF chain to configure separate time-domain multicarrier waveform of an RF channel to have a power level that is selected to support a predetermined performance level and to not exceed a maximum allowable transmit power level for that RF channel, the multi-MCS OFDM transmitter configured to: encode data for transmission over two or more RF channels with a single encoding scheme to generate an encoded data stream; segment bits of the encoded data stream into a bit stream for each of the two or more RF channels based on a selected modulation level for each of the two or more RF channels; and concurrently transmit the separate time-domain multicarrier waveform on each of the two or more RF channels at a power level that is selected not to exceed a maximum allowable transmit power level for each of the two or more RF channels, wherein the selected modulation level for each of the two or more RF channels is selected based at least in part on the maximum allowable transmit power level for each of the two or more RF channels, wherein the separate time-domain multicarrier waveforms are concurrently transmitted on each of the two or more RF channels, wherein for each RF channel of the two or more RF channels, the power level for each separate time-domain multicarrier waveform is selected so that for each of the two or more RF channels the power level does not exceed the maximum allowable transmit power level for each of the two or more RF channels, and wherein the multi-MCS OFDM transmitter configures each RF channel of the two or more RF channels to have a transmission bandwidth of approximately 1 MHz or 2 MHz by down-clocking a clock signal, wherein the separate time-domain multicarrier waveform transmitted on each of the two or more RF channels is an OFDM signal that comprises a plurality of subcarriers, and wherein one or more of the two or more RF channels occupy spectrum between approximately 700 MHz and 1000 MHz.