Equalization and carrier frequency offset compensation for UWA-OFDM communication systems based on the discrete sine transform

K Ramadan, AS Fiky, MI Dessouky… - Digital Signal …, 2019 - Elsevier
Abstract The Zero Forcing (ZF) equalizer suffers from noise enhancement and high
complexity due to direct matrix inversion. On the other hand, the Minimum Mean Square …

Equalization and blind CFO estimation for performance enhancement of OFDM communication systems using discrete cosine transform

K Ramadan, MI Dessouky… - International Journal …, 2020 - Wiley Online Library
In wireless communication systems, equalization is one of the most important schemes to
improve the system performance. This paper consists of two main parts. The first part …

Joint low‐complexity equalization and CFO estimation and compensation for UWA‐OFDM communication systems

K Ramadan, KF Ramadan, AS Fiky… - International Journal …, 2020 - Wiley Online Library
Frequency synchronization has a great importance in preserving the performance of the
underwater acoustic (UWA) orthogonal frequency division multiplexing (OFDM) systems …

Evaluation of Zadoff–Chu, Kasami, and chirp-based encoding schemes for acoustic local positioning systems

S Murano, C Pérez-Rubio, D Gualda… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
The task of determining the physical coordinates of a target in indoor environments is still a
key factor for many applications, including people and robot navigation, user tracking …

Virtual quadrature phase shift keying with low-complexity equalization for performance enhancement of OFDM systems

K Ramadan, MI Dessouky, FE Abd El-Samie… - … -International Journal of …, 2018 - Elsevier
Abstract The Zero-Forcing (ZF) equalizer suffers from two main problems; the noise
enhancement and the high complexity due to direct matrix inversion, especially with a large …

Joint low‐complexity equalization and carrier frequency offset compensation for underwater acoustic OFDM communication systems with banded‐matrix …

K Ramadan, MI Dessouky, M Elkordy… - International Journal …, 2018 - Wiley Online Library
Underwater acoustic wireless communication is considered as one of the most challenging
communication technologies due to low propagation speed, water salinity, water depth, PH …

Modified OFDM configurations with equalization and CFO compensation for performance enhancement of OFDM communication systems using symmetry of the …

K Ramadan, MI Dessouky, FE Abd El-Samie - AEU-International Journal of …, 2020 - Elsevier
Abstract The Orthogonal Frequency Division Multiplexing (OFDM) systems allow efficient
spectrum usage and simple Frequency Domain Equalization (FDE). However, a large …

Performance enhancement of underwater acoustic OFDM communication systems

M El-Mahallawy, AS TagEldien, SS Elagooz - Wireless Personal …, 2019 - Springer
The supported bandwidth of the underwater communication systems is limited to several kilo
hertz, which considers as the main challenge for Underwater Acoustic (UWA) …

Joint equalization and CFO compensation for performance enhancement of MIMO-OFDM communication systems using different transforms with banded-matrix …

K Ramadan, MI Dessouky, FE Abd El-Samie - AEU-International Journal of …, 2020 - Elsevier
Abstract The conventional Zero Forcing (ZF), and Minimum Mean Square Error (MMSE)
equalizers suffer from noise enhancement, and high complexity, respectively. Moreover, the …

Equalization and co-carrier frequency offsets compensations for UWA-OFDM communication systems

K Ramadan, MI Dessouky, FEA El-Samie - Wireless Personal …, 2022 - Springer
Abstract The Underwater Acoustic (UWA) wireless communication system is considered one
of the most challenging systems for data transmission. The Orthogonal Frequency Division …