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Incremental redundancy and variations for polar codes

An incremental redundancy, vector technology, applied in the field of telecommunications, can solve the problem of limited length performance of polar codes and no competitiveness.

Active Publication Date: 2019-08-13
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the finite-length performance of polar codes under SC may not be competitive compared with other modern channel coding schemes such as low-density parity-check (LDPC) codes and Turbo codes

Method used

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  • Incremental redundancy and variations for polar codes
  • Incremental redundancy and variations for polar codes
  • Incremental redundancy and variations for polar codes

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Embodiment Construction

[0043] Hereinafter, the inventive concept will be described more fully with reference to the accompanying drawings, in which examples of embodiments of the inventive concept are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. Components from one embodiment may by default be present / used in another embodiment. Any two or more embodiments described below may be combined with each other in any way. Furthermore, certain details of the described embodiments may be modified, omitted, or expanded without departing from the scope of the described subject matter.

[0044] The following description presents various embodiments of th...

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Abstract

Methods of transmitting blocks of incremental redundant coded bits are provided. Methods include concatenating, using an outer encoder, bits of an input bit vector to an outer encoded bit vector thathas fewer bits than the input bit vector, wherein the outer encoded bit vector includes a mixture of information bits from the input bit vector. Methods include encoding the outer encoded bit vector into inner encoded data that is mapped to multiple data transmission channels that each include a channel reliability value. A first portion of the data transmission channels is used to transmit information bits corresponding to the outer encoded bit vector and a second portion of the data transmission channels is used to transmit frozen bits that include no information.

Description

technical field [0001] The disclosed subject matter generally relates to telecommunications. Certain embodiments relate more specifically to concepts such as polar codes, hybrid automatic repeat request (HARQ), incremental redundancy, and system information blocks. Background technique [0002] Polar codes proposed by Arikan [1] are the first class of constructional coding schemes that can be proven to achieve symmetric capacity for binary-input discrete memoryless channels under low-complexity sequential cancellation (SC) decoders. However, the limited-length performance of polar codes under SC may not be competitive compared with other modern channel coding schemes such as low-density parity-check (LDPC) codes and Turbo codes. In addition, SC-list (SCL) decoders are proposed, which can approach the performance of the best maximum likelihood (ML) decoders. By concatenating simple CRC codes, it is shown that the performance of concatenated polar codes is comparable to that...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/00H03M13/13H03M13/29
CPCH03M13/13H03M13/2903H03M13/6306H04L1/0041H04L1/0065H04L1/1819H04L1/1845
Inventor 清汉·许余飞·布兰肯斯珀
Owner TELEFON AB LM ERICSSON (PUBL)
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