NAME¶
polar_channel_construction - Gnu Radio Polar Configurator
DESCRIPTION¶
POLAR code channel construction.
Channel Construction¶
polar_channel_construction exposes functionality to calculate polar
channels for different sizes. It may be used to calculate Bhattacharyya
parameters once and store them in a file in '~/.gnuradio/polar'. Frozen bit
positions are recalculated on every run.
polar_channel_construction provides a command-line interface for all the
channel construction code. These features are also accessible via the Polar
Configurator block in GRC.
BEC¶
BEC channel construction can be calculated explicitly because the BEC represents
a special case which simplifies the task. All functionality regarding this
channel is located in 'channel_construction_bec'.
AWGN¶
In general channel construction for polar codes is a very time consuming task.
Tal and Vardy proposed a quantization algorithm for channel construction which
makes it feasible. The corresponding implementation is located in
'channel_construction_awgn'. It should be noted that this more of a baseline
implementation which lacks all the advanced features the original
implementation provides. However, simulations show that BEC channel
construction with a design-SNR of 0.0dB yields similar performance and should
be preferred here.
SEE ALSO¶
gnuradio-companion(1)