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Constant-Weight Convolutional Codes for Index Modulation

  • The encoding of antenna patterns with generalized spatial modulation as well as other index modulation techniques require w-out-of-n encoding where all binary vectors of length n have the same weight w. This constant-weight property cannot be obtained by conventional linear coding schemes. In this work, we propose a new class of constant-weight codes that result from the concatenation of convolutional codes with constant-weight block codes. These constant-weight convolutional codes are nonlinear binary trellis codes that can be decoded with the Viterbi algorithm. Some constructed constant-weight convolutional codes are optimum free distance codes. Simulation results demonstrate that the decoding performance with Viterbi decoding is close to the performance of the best-known linear codes. Similarly, simulation results for spatial modulation with a simple on-off keying show a significant coding gain with the proposed coded index modulation scheme.

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Metadaten
Author:Daniel Nicolas BailonORCiD, Jürgen FreudenbergerORCiDGND, Volker KühnORCiD
ISBN:978-3-8007-5686-5
ISBN:978-3-8007-5688-9
Parent Title (English):WSA 2021; 25th International ITG Workshop on Smart Antennas, 10 - 12 November 2021, Eurecom, French Riviera, hybrid
Parent Title (German):ITG-Fachbericht ; 300
Publisher:VDE Verlag
Place of publication:Berlin ; Offenbach
Document Type:Conference Proceeding
Language:English
Year of Publication:2021
Release Date:2022/01/11
Institutes:Institut für Systemdynamik - ISD
Relevance:Keine peer reviewed Publikation (Wissenschaftlicher Artikel und Aufsatz, Proceeding, Artikel in Tagungsband)
Open Access?:Nein