Subträgerabständen
Subträgerabstand refers to the spacing between adjacent subcarriers in a multicarrier modulation system, such as orthogonal frequency-division multiplexing (OFDM). This spacing is a fundamental parameter that influences the system's performance and efficiency. A smaller subcarrier spacing leads to a larger number of subcarriers within a given bandwidth, which can improve spectral efficiency and allow for more flexible data allocation. However, it also makes the system more susceptible to frequency offsets and phase noise, as the orthogonality between subcarriers can be compromised. Conversely, a larger subcarrier spacing provides greater robustness against these impairments but reduces the number of available subcarriers and thus spectral efficiency.
The choice of subcarrier spacing is a trade-off between spectral efficiency, complexity, and robustness to channel