Basic study of OFDM with multipath propagation model in GNU platform

Muslimin, Jusnaini; Asnawi, Ani Liza; Ismail, Ahmad Fadzil; Ramli, Huda Adibah Mohd; Jusoh, Ahmad Zamani; Noorjannah, S.; Azmin, Nor Fadhillah Mohamed

doi:10.1109/icwise.2015.7380347

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…At last, we remove the cyclic prefix. Consequently, the digital signal is produced and converted into an analog form before being transmitted over the channel [7].…”

Section: Ofdm Vs Fbmc 21 Orthogonal Frequency Division Multiplexingmentioning

confidence: 99%

Spectrum analysis of OFDM versus FBMC in 5G mobile communications

Nassim¹,

Chakkor²

2023

TELKOMNIKA

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With the demand for mobile data traffic, multi-carrier transmission techniques are highly attractive for all-new wireless communication systems, which divides data into many components and sends each of these components via a different carrier signal. So far, orthogonal frequency division multiplexing (OFDM) and filter bank multi-carrier (FBMC) techniques are the dominant waveform contenders. A number of studies have been made and failed to give a complete comparison where they did not consider various conditions altogether. Therefore, this paper addresses a complete comparative analysis of OFDM and FBMC, performed based on spectral efficiency, modulation, demodulation, power spectral densities, and peak to average power ratio comparison, all simulated using Matlab and GNU's not unix radio (GNU-radio) software.

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“…At last, we remove the cyclic prefix. Consequently, the digital signal is produced and converted into an analog form before being transmitted over the channel [7].…”

Section: Ofdm Vs Fbmc 21 Orthogonal Frequency Division Multiplexingmentioning

confidence: 99%

Spectrum analysis of OFDM versus FBMC in 5G mobile communications

Nassim¹,

Chakkor²

2023

TELKOMNIKA

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“…Software Define Radio (SDR) is a platform where the majority of the physical layer signal processing is done at software by using Field Programmable Gate Array (FPGA), General Purpose Processor (GPP) and Digital Signal Processor (DSP) instead of using complicated electrical hardware's [1]- [3]. GNU Radio is an open source widely used software define radio platforms [5] which has digital signal processing blocks such as signal sources, sinks, filters, modulators, demodulators, encoders, decoders, equalizers, synchronizers and much more [7], [26]. The critical signal processing blocks are developed in C++ language [1]; however basic flow graphs are generated in python language [5].…”

Section: Introductionmentioning

confidence: 99%

“…The critical signal processing blocks are developed in C++ language [1]; however basic flow graphs are generated in python language [5]. Using this software user can build their own applications to transmit or receive data with the help of Universal Software Radio Peripheral (USRP) devices associated Radio Frequency (RF) TX/RX ports [1], [7].…”

Section: Introductionmentioning

confidence: 99%

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FER Performance Evaluation and Enhancement of IEEE 802.11 a/g/p WLAN over Multipath Fading Channels in GNU Radio and USRP N200 Environment

2018

KSII TIIS

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In this paper, authors have been evaluated the Frame Error Rate (FER) performance of IEEE 802.11 a/g/p standard 5 GHz frequency band WLAN over Rayleigh and Rician distributed fading channels in presence of Additive White Gaussian Noise (AWGN). Orthogonal Frequency Division Multiplexing (OFDM) based transceiver is implemented by using realtime signal processing frameworks (IEEE 802.11 Blocks) in GNU Radio Companion (GRC) and Ettus USRP N200 is used to process the symbol over the wireless radio channel. The FER is calculated for each sub-carrier conventional modulation schemes used by OFDM such as BPSK, QPSK, 16, 64-QAM with different punctuated coding rates. More precise SNR is computed by modifying the SNR calculation process of YANS and NIST error rate model to estimate more accurate FER. Here, real-time signal constellations, OFDM signal spectrums etc. are also observed to find the effect of multipath propagation of signals through flat and frequency selective fading channels. To reduce the error rate due to the multipath fading effect and Doppler shifting, channel estimation (CE) and equalization techniques such as Least Square (LS) and training based adaptive Least Mean Square (LMS) algorithm are applied in the receiver. The simulation work is practically verified at GRC by turning into a pair of Software Define Radio (SDR) as a simultaneous transceiver.

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