| 摘要 |
<p>A technique for generating a Single-Carrier Frequency Division Multiple Access, or SC-FDMA, signal having a transmission bandwidth and comprising a Constant Amplitude Zero-Autocorrelation, or CAZAC, sequence of length N CAZAC is described. It will be assumed that the SC-FDMA signal has a time domain formulation with a term representative of an Inverse Discrete Fourier Transform, or IDFT, of length M, with M > N CAZAC . A method embodiment of this technique comprises providing a frequency-domain representation of the CAZAC sequence; mapping the frequency-domain representation of the CAZAC sequence to N CAZAC of M SEQ frequency points, with N CAZAC < M SEQ < M, and filling the remaining M SEQ - N CAZAC frequency points with zeros to obtain M SEQ frequency-domain samples; applying an IDFT of size M SEQ to the resulting frequency-domain samples to obtain a sub-sampled time-domain representation of the CAZAC sequence; and up-sampling the sub-sampled time-domain representation of the CAZAC sequence according to the transmission bandwidth to generate the SC-FDMA signal.</p> |
