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Classes |
class | digital_ofdm_cyclic_prefixer |
| Adds a cyclic prefix and performs pulse shaping on OFDM symbols.Input: OFDM symbols (in the time domain, i.e. after the IFFT). Optionally, entire frames can be processed. In this case, len_tag_key must be specified which holds the key of the tag that denotes how many OFDM symbols are in a frame. Output: A stream of (scalar) complex symbols, which include the cyclic prefix and the pulse shaping. Note: If complete frames are processed, and rolloff_len is greater than zero, the final OFDM symbol is followed by the delay line of the pulse shaping. More...
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Function Documentation
- Parameters
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input_size | FFT length (i.e. length of the OFDM symbols) |
output_size | FFT length + cyclic prefix length (in samples) |
rolloff_len | Length of the rolloff flank in samples |
len_tag_key | For framed processing the key of the length tag |