METHODS, SYSTEMS, AND APPARATUS FOR PARTIAL CODE RATE REDUCTION IN POLAR CODING

Abstract

Polar codes for wireless communications are constructed to adapt to channel conditions. The polar code construction includes a partial code rate reduction. Input bits are encoded by a polar code to obtain a number of encoded bits, and the number of the encoded bits on bit indices in a first segment of encoded bit indices of the encoded bits is reduced. The polar code includes or provides a first set of bit indices for values of the input bits, a second set of bit indices for a predetermined bit value, and a third set of bit indices corresponding to the first segment of encoded bit indices. The second set and the third set of bit indices include a first bit index on which the predetermined bit value is placed to reduce a code rate of the first segment.

CPC Classifications