Method for generating Turbo code interleaver

Abstract

The invention provides a method for generating a Turbo code interleaver, which comprises the following steps of: inputting N and M, setting L, satisfying L = NM, setting Dmin and Smin, randomly generating S (x), enabling S (x) to satisfy the constraint that D is greater than or equal to Dmin, and calculating a distance spectrum when S is greater than or equal to Smin; when the S is smaller than the Smin, continuing to execute the steps until a distance spectrum is calculated, judging whether the performance of the interleaver meets a specified standard or not according to the distance spectrum; when the performance of the interleaver meets the specified standard, performing PER simulation; when the performance of the interleaver does not meet the specified standard, resetting new Dmin andSmin, and continuing to execute the steps; judging whether the result of PER simulation meets the specified requirements or not, generating S (x) when the result of PER simulation meets the specifiedrequirements, and resetting new Dmin and Smin to continue to execute the above steps when the result of PER simulation does not meet the specified requirements. The technical scheme has the beneficialeffects that the error rate after final error correction can be effectively reduced, and the error code performance is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for generating a Turbo code interleaver. Background technique [0002] The broadband power line carrier communication system does not require rewiring. The existing distribution network is equipped with PLC terminals, relays, local end equipment and auxiliary devices, and the original power line network is converted into a power line communication network. Constructing a high-speed Internet through power lines can complete bearer services such as video, voice, and data, which is convenient and fast, and can maximize the use of existing facilities. [0003] The IEEE P1901 series specification is the current broadband power line carrier communication standard, in which Turbo code is used as the communication code of broadband power line carrier. Turbo code is also called Parallel Concatenated Convolutional Code (PCCC, Parallel Concatenated Convolutional Code). Comb...

AI Technical Summary

Problems solved by technology

Usually the interleaver performance improves as the interleaver length L increases, but for commonly used frame lengths, it is quite difficult to find (design) a good interleaving table, because the dimension to find increases exponentially with L

Obviously, it is completely impossible and unrealistic to use the exhaustive method to find the interleaving table in a limited time and verify it through performance simulation

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