Radix-4 successive cancellation decoding of polar codes with partial sum lookahead
Hussein G. H. Hassan, Amr M. A. Hussien, Hossam A. H. Fahmy · 2017
Polar codes have been proposed recently as proven to asymptotically achieve channel capacity for memoryless channels. However, realization of high throughput decoders for large code lengths remains a daunting challenge due to the successive decoding behaviour. With the help of using radix-4 processing units, a special last stage processing unit to decode 4 bits in the same clock and partial sum look ahead technique, this paper proposes a high throughput decoder architecture, which considerably reduces the latency compared to state of the art implementations.