Enhanced Huffman Coded OFDM With Index Modulation

Dang, Shuping; Guo, Shuaishuai; Coon, Justin P.; Shihada, Basem; Alouini, Mohamed‐Slim

doi:10.1109/twc.2020.2965524

Cited by 6 publications

(1 citation statement)

References 56 publications

(107 reference statements)

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“…Each left-going edge represents a 0, each right-going edge a 1 as shown in Figure 3 below. Authors in [20] proposed enhancement Huffman code for OFDM using index modulation to strengthen accuracy of data transmission. The efficiency of the techniques was determined, and it was discovered that the Huffman tree's depth has a substantial impact on error performance, resulting in more secure data transmission.…”

Section: Huffman Codingmentioning

confidence: 99%

Reduction of Papr Using Asymmetric Numeral System Qc-LDPC With Huffman and Arithmetic Coding for F-Ofdma System

Idris

Arham²,

Sulong³

et al. 2022

AEJ

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As modern wireless communication systems move towards 5G implementation, the system must provide sophisticated and ubiquitous service and flexibility. Therefore, Filtered Orthogonal Frequency Division Multiple Access (F-OFDMA) is one of the most suitable modulation techniques used in 5G systems to achieve efficient and reliable wireless communication. Other than that, F-OFDMA also has good quality rather than OFDM since it provides a better result of high side lobes and enlarges the scale of the spectrum analyzer. However, one of the significant problems in the F-OFDMA system is the high peak-to-average power ratio (PAPR), affecting the system's overall performance and causing high transmit power at the transmitter. In this paper, combination of Arithmetic Coding (AC) and Huffman coding (HC) with Asymmetric Numeral Systems (ANS) provide better performance for PAPR as well as bit error rate (BER) in F-OFDMA. Both AC and HC are proposed to combine with ANS and Quasi-Cyclic Low-Density Parity Check (QC-LDPC) since it provides a good result to defeat the high PAPR. BER and PAPR performance were compared for the AC and HC with ANS QC-LDPC. Based on the results, ANS-AC-QCLDPC proved as the best joint method has 35.25% improvement for PAPR while BER has 89.87%. This research also justified that ANS with Arithmetic-QCLDPC and Huffman-QCLDPC give better BER results as well.

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Section: Huffman Codingmentioning

confidence: 99%

Reduction of Papr Using Asymmetric Numeral System Qc-LDPC With Huffman and Arithmetic Coding for F-Ofdma System

Idris

Arham²,

Sulong³

et al. 2022

AEJ

View full text Add to dashboard Cite

show abstract

Two-Stage ML Detector Using Absolute Value of IQ Components and SVM for Adaptive OFDM-IM

Seo

Jin

et al. 2022

IEEE Access

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Among various index modulation technology, adaptive orthogonal frequency division multiplexing with index modulation (A-OFDM-IM) improves reliability by solving the problem of deep fading. However, the maximal likelihood (ML) detector of A-OFDM-IM has high complexity by simultaneously performing active subcarrier detection and quadrature amplitude modulation (QAM) symbol demodulation. A simpler type of ML detector can be applied since the A-OFDM-IM has independent active states of each subcarrier and uses a single QAM constellation. In this paper, we propose two low-complexity detectors for the A-OFDM-IM. The proposed detectors have a two-stage receiving process, active subcarrier detection, and QAM demodulation. In active subcarrier detection, the presence or absence of the QAM symbol is more important than its information. Therefore we derive the thresholds using the absolute value of the in-phase and quadrature components of the received signal in the frequency domain. Using the absolute value, the distribution of noise added to inactive subcarrier is half normal. This is different from noise distribution of the ML detector, and the proposed detectors select the threshold considering the corresponding noise distribution. The first proposed detector uses a threshold derived by the ML estimation method. The second detector estimates the active subcarriers via a support vector machine. The proposed detectors have lower complexity than the ML detector because of the divided receiving process. Moreover, the theoretical analysis and simulation results show that the proposed detectors have better reliability than the ML detector due to different noise distribution and thresholds.INDEX TERMS index modulation, support vector machine, low complexity detector, OFDM

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Physical Layer Security Design for FDD IM-OTFS Transmissions Based on Secure Mapping

Ma,

Gao,

Wang

et al. 2023

IEEE Access

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Enhanced Huffman Coded OFDM With Index Modulation

Cited by 6 publications

References 56 publications

Reduction of Papr Using Asymmetric Numeral System Qc-LDPC With Huffman and Arithmetic Coding for F-Ofdma System

Reduction of Papr Using Asymmetric Numeral System Qc-LDPC With Huffman and Arithmetic Coding for F-Ofdma System

Two-Stage ML Detector Using Absolute Value of IQ Components and SVM for Adaptive OFDM-IM

Physical Layer Security Design for FDD IM-OTFS Transmissions Based on Secure Mapping

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