RoFSO system based on BCH and RS coded BPSK OFDM for 5G applications in smart cities

Kumar, Abhishek; Krishnan, Prabu

doi:10.1007/s11082-021-03392-y

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…Gambar 5 menunjukkan mapper untuk mengambil bit 0 dan 1 sebagai input pada transmitter dan menghasilkan nilai kompleks dengan output sebagai simbol. Codeword 𝑐(𝑘) dipetakan pada modulasi kompleks simbol 𝑥 berdasarkan Persamaan 2 (Kumar & Krishnan, 2022).…”

Section: Modulasi Binary Phase Shift Keying (Bpsk)unclassified

Analisis Kinerja Jaringan 5G dengan Pengkodean QC-LDPC dan Polar

WAHYUNINGRUM,

GINTING,

NI’AMAH

et al. 2024

ELKOMIKA

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ABSTRAKJaringan 5G telah menjadi penanda penting dalam evolusi teknologi nirkabel yang menawarkan kecepatan dan kinerja yang luar biasa untuk memenuhi kebutuhan konektivitas yang semakin meningkat. Dalam jaringan 5G, pengkodean kanal merupakan elemen penting dalam memastikan pengiriman data yang handal dan efisien. Penelitian ini mengkaji sistem 5G pada frekuensi 26 GHz dan bandwidth 200 MHz menggunakan Orthogonal Frequency Division Multiplexing (OFDM) dengan ukuran Fast Fourier Transform (FFT) sebesar 256 dan modulasi Binary Phase Shift Keying (BPSK). Penelitian ini mengevaluasi perbandingan penambahan channel coding yaitu QC-LDPC dan polar codes. Performansi QC-LDPC codes pada BER sebesar 10-4 dapat dicapai dengan SNR 𝛾 = 17 𝑑𝐵 untuk kode QC-LDPC dan SNR 𝛾 = 15 𝑑𝐵 untuk polar codes. Hasil menunjukkan bahwa penambahan channel coding mampu menangkap diversity order kedua dan performansi polar codes lebih baik dibandingkan dengan QC-LDPC.Kata kunci: 5G, BPSK, OFDM, Polar, QC-LDPC ABSTRACTThe 5G network has become a significant milestone in the evolution of wireless technology, offering remarkable speed and performance to meet the growing demands of connectivity. In the 5G network, channel coding is a crucial element to ensure reliable and efficient data transmission. This research evaluate the 5G network operating at a frequency of 26 GHz and a bandwidth of 200 MHz, utilizing Orthogonal Frequency Division Multiplexing (OFDM) with an Fast Fourier Transform (FFT) size of 256 and Binary Phase Shift Keying (BPSK) modulation. The research evaluates the comparison of adding channel coding using QC-LDPC and polar codes. The performance of QC-LDPC codes at a bit error rate (BER) of 10-4 can be achieved with an SNR of 𝛾 = 17 𝑑𝐵 for QC-LDPC codes and an SNR of 𝛾 = 15 𝑑𝐵 for polar codes. The results shows the addition of channel coding is capable of capturing second-order diversity, and polar codes outperforms QC-LDPC in terms of performances.Keywords: 5G, BPSK, OFDM, Polar, QC-LDPC

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Section: Modulasi Binary Phase Shift Keying (Bpsk)unclassified

Analisis Kinerja Jaringan 5G dengan Pengkodean QC-LDPC dan Polar

WAHYUNINGRUM,

GINTING,

NI’AMAH

et al. 2024

ELKOMIKA

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“…Obviously, in the literature, no previous work had compared the performance of FFT-based, DWT-based, and FrFT-based STBC-OFDM systems. OFDM based radio over free space optics technology is becoming a effective alternative for 5G applications [19][20]. Similarly non-orthogonal multiple access system (NOMA) based wireless communication systems support high end multi-media application requirement of 5G and 6G systems [21].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of STBC-OFDM system using different transforms over LOS and NLOS channel

Kansal,

Mounir

2023

Preprint

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Modern day users demand a robust communication that too an elevated data rate. These expectations can only be fulfilled by a hybrid combination of multiplexing techniques likes of orthogonal frequency division multiplexing (OFDM) and multiple input multiple output (MIMO) antenna systems. OFDM methodology takes care of elevated data rate requirements whereas MIMO facilitate the enhanced reliability, low bit error rate (BER) and higher spectral efficiency characteristics. The performance of conventional MIMO-OFDM system can further be enhanced by utilizing various transforms like fractional Fourier transform (FrFT) or discrete wavelet transform (DWT) in place of traditional fast Fourier transform (FFT) in OFDM. A comprehensive analysis of bit error rate (BER) and spectral efficiency for conventional MIMO-OFDM system based on FFT, FrFT, and DWT has been presented in this paper. The simulated outcome shows a significant reduction in BER and improvement in spectral efficiency in the DWT-based MIMO-OFDM system.

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