Citation
Abstract
This article studies the frame error probability of frequency-flat block fading channels assuming that no interleavers are used at the transmitter and receiver. This assumption is typically applicable for very slow fading channels, where interleaving is not possible because it requires too much storage or it introduces too much delay. In the context of space exploration, such channels can occur between landed spacecraft on the lunar or Martian surface and a Deep Space Network station, as shown by our previous work. Two figures of merit are considered: First, we study the frame error probability for a link impaired by frequency-flat multi-path fading effects where data is transmitted using traditional forward error correction codes. Then, we extend the analysis to estimate this same quantity if a second copy of each coded frame is sent after a fixed time delay, i.e., errors due to fade events are protected through a combination of coding and repetition. We demonstrate that using this hybrid approach can significantly improve link performance (measured in terms of E /N for a given frame b 0 error rate) and is therefore a good alternative for links where interleaving is impractical.
Keywords
Details
- Volume
- 42-219
- Published
- November 15, 2019
- Pages
- 1–24
- File Size
- 847 KB