Design of Rateless Polar Accumulate Tornado Codes Using EXIT Chart for UAV Communications

Anggraeni, Citra Dewi; Anwar, Khoirul

doi:10.1109/softt54252.2021.9673142

Cited by 1 publication

(2 citation statements)

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“…This equation indicates that zero LLR coming to the CND should be avoided since all results are becoming zero causing no benefit in decoding. This is one of the reason that LT codes require more protections, for example, by using accumulator as in [15]. The outcomes of L p,VND are then returned to bits using hard decision of…”

Section: System Modelmentioning

confidence: 99%

“…However, the applications of LDPC for large block-length has been investigated to in [12] and [13] for Digital Video Broadcasting Terrestrial 2nd generation (DVBT2) and recently for the fifth telecommunication generation (5G) new radio and [14], where Raptor-like structure is used to have rateless coding scheme capability. Recently, we revealed that irregular degree distribution is more beneficial since we have additional degree of freedom to construct better LDPC-like coding scheme as in [15]. In this paper, we extract those benefits of irregularity to design better codes for short block-length transmissions.…”

Section: Introductionmentioning

confidence: 99%

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Deriving equivalent structure of elements for low density parity check codes construction

Zaeni

Muzhofi

Solehudin

et al. 2023

IJEECS

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This paper proposes a method to derive equivalent coding structures of elements to construct low density parity check (LDPC) codes. We propose stairs LDPC (SLDPC) codes to demonstrate the effectiveness of the proposed method, which is expected to be beneficial for short block-length transmissions, but providing high coding rate. The equivalent coding structures are both for transmitter and receiver to: (i) reduce the encoding and decoding computational complexity, and (ii) search possibility of finding new coding scheme and observe their performances. We evaluate the validity of the method by confirming the equality in performances of the SLDPC codes in terms of bit-error-rate (BER) followed by investigation on their performance gaps to the Shannon limit via a series of computer simulations. The results show that the SLDPC codes have the same BER performance with that of the low density generator matrix (LDGM) codes confirming the validity of the proposed equivalent matrix derivation. This result indicates that different graphs can provide the same performances, because their equivalent matrices are the same. This result is expected to open new insight for the designing simple channel coding for short block-length LDPC codes having high coding rate for future less power consumption applications.

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Section: System Modelmentioning

confidence: 99%