Results 21 to 30 of about 5,731 (141)

Unitary space-time modulation via Cayley transform [PDF]

, 2003
A prevoiusly proposed method for communicating with multiple antennas over block fading channels is unitary space-time modulation (USTM). In this method, the signals transmitted from the antennas, viewed as a matrix with spatial and temporal dimensions ...
Hassibi, Babak, Jing, Yindi
core   +1 more source

Multiple-Block Combined Decoding for Cell Search With Polar Codes

IEEE Access, 2019
Polar codes have been applied in many applications due to the excellent decoding performance as well as relatively low encoding and decoding complexity.
Xinyi Wang, Congzhe Cao, Ce Sun, Dai Jia, Zesong Fei   +4 more
doaj   +1 more source

A time-domain control signal detection technique for OFDM [PDF]

, 2016
Transmission of system-critical control information plays a key role in efficient management of limited wireless network resources and successful reception of payload data information.
A Damnjanovic, Brian G. Stewart, G Ku, H Minn, H Zamiri-Jafarian, HC Nguyen, J Balakrishnan, J Pan, K Su, L Weng, LB Le, LJ Cimini, M Morelli, M Wen, MK Ozdemir, MO Damen, NI Miridakis, O Edfors, S Adegbite, S Coleri, SA Adegbite, Saheed A. Adegbite, Scott G. McMeekin, SJ Thiruvengadam, TVK Chaitanya, V Le Nir, X Cheng   +26 more
core   +1 more source

A Link Quality Model for Generalised Frequency Division Multiplexing [PDF]

, 2017
5G systems aim to achieve extremely high data rates, low end-to-end latency and ultra-low power consumption. Recently, there has been considerable interest in the design of 5G physical layer waveforms.
Al-Juboori, Ghaith R., Doufexi, Angela, Halls, David, Nix, Andrew R.   +3 more
core   +3 more sources

Decoder-in-the-Loop: Genetic Optimization-based LDPC Code Design [PDF]

, 2019
LDPC code design tools typically rely on asymptotic code behavior and are affected by an unavoidable performance degradation due to model imperfections in the short length regime.
Brink, Stephan ten, Cammerer, Sebastian, Ebada, Moustafa, Elkelesh, Ahmed, Schmalen, Laurent   +4 more
core   +3 more sources

Efficient LDPC Code Design based on Genetic Algorithm for IoT Applications

EAI Endorsed Transactions on Industrial Networks and Intelligent Systems
In this paper, we propose a low-density parity check (LDPC) code design scheme that improves the performance of the existing genetic algorithm-based LDPC scheme. In particular, we enhance the performance of the LDPC code by removing the girth-4 property
Thanh-Loc Nguyen-Van, Tan Do Duy, Thien Huynh-The   +2 more
doaj   +1 more source

Permutation Polynomial Interleaved DFT-s-OFDM

IEEE Open Journal of the Communications Society, 2023
We propose frequency-domain interleaver for discrete Fourier transform spread orthogonal division multiplexing (DFT-s-OFDM) based on a linear- or quadratic permutation polynomial (LPP/QPP).
Fredrik Berggren, Branislav M. Popovic
doaj   +1 more source

An Efficient Turbo Decoding and Frequency Domain Turbo Equalization for LTE Based Narrowband Internet of Things (NB-IoT) Systems

Sensors, 2021
This paper addresses the main crucial aspects of physical (PHY) layer channel coding in uplink NB-IoT systems. In uplink NB-IoT systems, various channel coding algorithms are deployed due to the nature of the adopted Long-Term Evolution (LTE) channel ...
Mohammed Jajere Adamu, Li Qiang, Rabiu Sale Zakariyya, Charles Okanda Nyatega, Halima Bello Kawuwa, Ayesha Younis   +5 more
doaj   +1 more source

Deep Learning-Based Communication Over the Air

, 2017
End-to-end learning of communications systems is a fascinating novel concept that has so far only been validated by simulations for block-based transmissions.
Brink, Stephan ten, Cammerer, Sebastian, Dörner, Sebastian, Hoydis, Jakob   +3 more
core   +1 more source

Outage-based ergodic link adaptation for fading channels with delayed CSIT

, 2012
Link adaptation in which the transmission data rate is dynamically adjusted according to channel variation is often used to deal with time-varying nature of wireless channel.
Bae, Jung Hyun, Kang, Inyup, Lee, Jungwon   +2 more
core   +1 more source