Results 91 to 100 of about 44,063 (255)
On the Achievable Rates of Decentralized Equalization in Massive MU-MIMO Systems
, 2017 Massive multi-user (MU) multiple-input multiple-output (MIMO) promises significant gains in spectral efficiency compared to traditional, small-scale MIMO technology.
Cavallaro, Joseph R. +3 more
core +1 more source
Lyapunov Exponent Testing for AWGN Generator System
Communications and Network, 2014 Additive White Gaussian Noise (AWGN) is common to every communication channel. It is statistically random radio noise characterized by a wide frequency range with regards to a signal in communication channels. In this paper, AWGN signal is generated through design an analogue circuit method, and then the multiple recursive method is also used to ...
Hussein M. Hathal +2 more
openaire +2 more sources
Artificial Noise Aided Directional Modulation with Multilog Frequency Diverse Array
IET Communications, Volume 20, Issue 1, January/December 2026.The basic principle of the proposed AN‐DM‐MFDA system is to allocate AN to leakage sidelobes instead of uniformly transmitting on the two‐dimensional plane. Moreover, we theoretically derive the average bit error rates as well as the secrecy capacity between the legitimate receiver and eavesdropper in the developed system.
Ji Liu, Yue Xiao, Yong Wang, Xia Lei
wiley +1 more source
Quantization Effects in OFDM Systems [PDF]
, 2008 The advantage of using orthogonal frequency division multiplexing (OFDM) over the single-carrier modulation is its ability to mitigate interference and fading without complex equalization filters in the receiver.
Shao, X., Slump, C.H.
core +2 more sources
An Improved Flip SD Algorithm for Symmetric Polar Codes
IET Communications, Volume 20, Issue 1, January/December 2026.In this study, an improved flip SD algorithm for symmetric polar codes is proposed. Based on the symmetrical structure, a flipping set is first constructed, which exhibits a reasonable size and a high probability of encompassing unfavourable values.
Yanfeng Li +4 more
wiley +1 more source
Rudin-Osher-Fatemi Total Variation Denoising using Split Bregman
Image Processing On Line, 2012 Denoising is the problem of removing noise from an image. The most commonly studied case is with additive white Gaussian noise (AWGN), where the observed noisy image f is related to the underlying true image u by f=u+η and η is at each point in space ...
Pascal Getreuer
doaj +1 more source
Polar Codes over Fading Channels with Power and Delay Constraints
, 2017 The inherent nature of polar codes being channel specific makes it difficult to use them in a setting where the communication channel changes with time.
Deekshith, P. K., Sahasranand, K. R.
core +1 more source
IET Communications, Volume 20, Issue 1, January/December 2026.This paper introduces a novel AMR method named IUDR‐Net to address the challenge of poor recognition accuracy under low SNR conditions. The method first employs the improved U‐Lite network to suppress the impact of noise effectively and then adopts the ResNet18‐1D network to perform the AMR task efficiently.
Haikun Fang +4 more
wiley +1 more source
Quasi-Concavity for Gaussian Multicast Relay Channels
Entropy, 2019 Standard upper and lower bounds on the capacity of relay channels are cut-set (CS), decode-forward (DF), and quantize-forward (QF) rates. For real additive white Gaussian noise (AWGN) multicast relay channels with one source node and one relay node ...
Mohit Thakur, Gerhard Kramer
doaj +1 more source
On the MIMO Channel Capacity of Multi-Dimensional Signal Sets
, 2004 In this contribution two general formulae were derived for the capacity evaluation of Multi-Input Multi-Output (MIMO) systems using multi-dimensional signal sets, different modulation schemes and an arbitrary number of transmit as well as receive ...
Hanzo, L., Ng, S. X.
core