Polar Codes are a recently proposed class of linear block error correction codes. They are provably capacity achieving codes over Binary Discrete Memoryless Channels (B-DMC) and have hence garnered a lot of interest from the scientific community. It is also a proposed channel coding method for 5G technology. Bit-Interleaved Coded Modulation with Iterative coding (BICM-ID) is a well known design to improve the error correcting performance of underlying channel codes over continuous channels especially Additive White Gaussian Noise(AWGN) channels. The novel idea in this paper, is to combine these powerful error correcting techniques i.e. integrate Polar Codes in a BICM-ID design to produce a high performance Bit-Interleaved Polar Coded Modulation with Iterative Decoding (BIPCM-ID) system. The error correcting performance of such a BIPCM-ID system has been analyzed through simulations over AWGN channel and multiple modulation schemes. Additionally error floor removal has been implemented and system performance has been discussed.
Arikan in his paper , proposed a new channel coding scheme by “polarizing” channels w.r.t. their capacities. The process of channel polarization helps to classify every bit channel w.r.t. channel capacity which is used to create a scheme of encoding information bits into a codeword. This form of classification provides a new family of linear block codes called Polar Codes. BICM-ID is a state-of-the-art error correcting scheme. The coded-modulation scheme was proposed in for improving error correction capabilities by using channel coding andmodulation schemes as a combined unit instead of independent modules. Adding diversity to the codes by interleaving, should improve the error correction performance as proposed in , to hence provide the Bit Interleaved Coded Modulation (BICM) design described in. BICM’s demerits can be overcome by exchanging extrinsic information between multiple modules of the Iterative Decoding (ID) chain iteratively, to improve error correcting capability over every iteration . Such a BICM-ID scheme is helpful for error correction of codes received over AWGN and Fading channels. The idea is to encode the input data bits into codewords generated by polar encoding, interleaving and then modulating them at the transmitter end. Similarly, at the receiver end polar decoder, demodulator, interleaver and de-interleaver iteratively perform their tasks and exchange extrinsic information to produce codeword estimates.
Publisher : IEEE
By : Souradip Saha, Matthias Tschauner, Marc Adrat , Tim Schmitz, Peter Jax, Peter Vary
File Information: English Language/ 8 Page / size: 566 KB
سال : ۱۳۹۶
ناشر : IEEE
کاری از : Souradip Saha, Matthias Tschauner, Marc Adrat , Tim Schmitz, Peter Jax, Peter Vary
اطلاعات فایل : زبان انگلیسی / 8 صفحه / حجم : KB 566