An apparatus, comprising: an encoder to encode at least one information bit to generate a plurality of encoded bits; an interleaver to interleave the plurality of encoded bits to generate a plurality of interleaved bits; a constellation mapper to map the plurality of interleaved bits to at least one constellation to generate a plurality of mapped signals; a plurality of inverse discrete fast Fourier transform, IDFT, processors respectively to process the plurality of mapped signals to generate a plurality of signal streams, wherein: a first of the IDFT processors to process a first of the plurality of mapped signals to generate a first of the plurality of signal streams in accordance with a fast Fourier transform, FFT, channelization for a first number of orthogonal frequency division multiplexing, OFDM, tones; and a second of the IDFT processors to process a second of the plurality of mapped signals to generate a second of the plurality of signal streams in accordance with the FFT channelization for a second number of OFDM tones; and at least one communication interface to transmit the plurality of signal streams to at least one additional apparatus; characterized in that at least one of the first number of OFDM tones and the second number of OFDM tones corresponds to a first sub-bandwidth of an available bandwidth of a given TV white space. TVWS, channel at a first, time, wherein the first number of OFDM tones is centrally located within the available bandwidth of the given TVWS channel, and to a second sub-bandwidth of the available bandwidth of the given TVWS channel that is larger than the first sub-bandwidth at a second time within an alternative operational mode. an encoder to encode at least one information bit to generate a plurality of encoded bits; an interleaver to interleave the plurality of encoded bits to generate a plurality of interleaved bits; a constellation mapper to map the plurality of interleaved bits to at least one constellation to generate a plurality of mapped signals; a plurality of inverse discrete fast Fourier transform, IDFT, processors respectively to process the plurality of mapped signals to generate a plurality of signal streams, wherein: a first of the IDFT processors to process a first of the plurality of mapped signals to generate a first of the plurality of signal streams in accordance with a fast Fourier transform, FFT, channelization for a first number of orthogonal frequency division multiplexing, OFDM, tones; and a second of the IDFT processors to process a second of the plurality of mapped signals to generate a second of the plurality of signal streams in accordance with the FFT channelization for a second number of OFDM tones; and a first of the IDFT processors to process a first of the plurality of mapped signals to generate a first of the plurality of signal streams in accordance with a fast Fourier transform, FFT, channelization for a first number of orthogonal frequency division multiplexing, OFDM, tones; and a second of the IDFT processors to process a second of the plurality of mapped signals to generate a second of the plurality of signal streams in accordance with the FFT channelization for a second number of OFDM tones; and at least one communication interface to transmit the plurality of signal streams to at least one additional apparatus; characterized in that at least one of the first number of OFDM tones and the second number of OFDM tones corresponds to a first sub-bandwidth of an available bandwidth of a given TV white space. TVWS, channel at a first, time, wherein the first number of OFDM tones is centrally located within the available bandwidth of the given TVWS channel, and to a second sub-bandwidth of the available bandwidth of the given TVWS channel that is larger than the first sub-bandwidth at a second time within an alternative operational mode.