Comparison of FFT-Based and DCT-Based Channel Estimation and ECC for OFDM System [PDF]
Engineering and Technology Journal, 2015 Orthogonal Frequency Division Multiplexing (OFDM) has become a popular modulation method for high data rate wireless communications. In this paper, two schemes are proposed.
Awatif Ali Jafaar
doaj +1 more source
Multiple Access Chua Chaotic Communication system using Real Orthogonal Matrix Approach [PDF]
Engineering and Technology Journal, 2018 An alternative to traditional Pseudo-Noise (PN)-Sequences, one-dimension (1D) orthogonal chaotic map sequences, and three dimensional (3D) continuous chaotic systems (x,y,z) are generated by orthonormal Gram-Schmidt process. A new Orthogonal Chua Chaotic
Ali Radhi
doaj +1 more source
Textual geolocation in Hebrew: mapping challenges via natural place description analysis
Journal of Spatial Information ScienceDescribing where a place is situated is an innate communication skill that relies on spatial cognition, spatial reasoning, and linguistic systems.
Tal Bauman +5 more
doaj +1 more source
Performance of BPSK subcarrier intensity modulation free-space optical communications using a log-normal atmospheric turbulence model [PDF]
, 2010 In this paper, we present simulation results for the bit error rate (BER) performance and the fading penalty of a BPSK - subcarrier intensity modulation (BPSK-SIM) free-space optical (FSO) communication link in a log-normal atmospheric turbulence model ...
Ghassemlooy, Zabih +6 more
core +2 more sources
OFDM Channel Estimation Along with Denoising Approach under Small SNR Environment using SSA
Journal of Communications Software and Systems, 2022 —In this paper, a de-noising approach in conjunction with channel estimation (CE) algorithm for OFDM systems using singular spectrum analysis (SSA) is presented. In the proposed algorithm, the initial CE is computed with the aid of traditional linear
E. Hari Krishna +2 more
doaj +1 more source
, 2003 Effect of birefringent disorder on the Bit Error Rate (BER) in an optical fiber telecommunication system subject to amplifier noise may lead to extreme outages, related to anomalously large values of BER. We analyze the Probability Distribution Function (
B. Huttner +11 more
core +2 more sources
General BER Expression for One-Dimensional Constellations
, 2012 A novel general ready-to-use bit-error rate (BER) expression for one-dimensional constellations is developed. The BER analysis is performed for bit patterns that form a labeling.
Agrell, Erik +3 more
core +1 more source
A novel BCS code in F-OFDM system: a promising candidate for 5G wireless communication systems [PDF]
, 2021 Due to the rapid growth in wireless communication systems, Long Term Evolution (LTE), mainly based on Orthogonal Frequency Division Multiplexing (OFDM), no longer meets wireless communication systems request and higher data rate requirements. Thus,
Hussain, Ghasan Ali
core
Implementation and testing of a FSK demodulator
Revista Elektrón, 2021 This work describes the implementation and testing of a FSK demodulator, within the framework of a modem re-engineering for navy communications. It was developed over a Spartan 6 XCSLX25 FPGA with its code in VHDL.
Leandro José Ferrari +3 more
doaj +1 more source
Performance analysis of modified asymmetrically-clipped optical orthogonal frequency-division multiplexing systems [PDF]
, 2016 A modification to the Asymmetrically-Clipped Optical Orthogonal Frequency-Division Multiplexing (ACO-OFDM) technique is proposed through unipolar encoding.
Andonovic, Ivan +3 more
core +1 more source