Results 51 to 60 of about 2,916 (209)
Precoding of Correlated Symbols for STBC Systems Design [PDF]
, 2017 A problem with transmitting correlated symbols over multiple transmit channel paths is that there is no diversity gain achieved at the receiver. Precoding technique provides a smart approach to achieving diversity gains at the receiver even when correlated symbols are transmitted; by phase variation, amplitude variation or both provided by the precoder.
Kelvin O. O. Anoh +2 more
openaire +2 more sources
Transmit antenna selection schemes for STBC-SM [PDF]
TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2020 أدى اقتران الترميز الزمكاني (STBCs) بمخطط التوليف الفضائي (SM) إلى إدخال تقنية التنوع لأنظمة SM. تقدم هذه الورقة تقنيات اختيار الهوائي لتوفير كسب إضافي مع التوليف الفضائي المشفر لترميز الزمكاني (STBC-SM). على وجه التحديد ، اختيار الإرسال الأمثل , تمت دراسة عناصر الهوائي عند المرسل لإرسال رمز فضاء الزمكاني المعدل مكانيا.
Belal Asaati, Ammar M. Abu-Hudrouss
openaire +1 more source
Teknologi dan Kejuruan, 2012 It is well known that space-time diversity using space-time coding (STC) is an effective technique to improve wireless communication performance. STC was designed for flat fading channel and consist of space-time trellis code (STTC) and space-time block ...
Muladi Muladi
doaj +1 more source
IET Image Processing, Volume 19, Issue 1, January/December 2025.This paper proposes a DNA‐Dynamic Concurrent Permutation‐Diffusion Algorithm (DNA‐DCP‐DA) for secure image encryption, employing novel scaling chaotification models and advanced noncommutative DNA operations to address weaknesses in existing systems.
Mustafa Kamil Khairullah +5 more
wiley +1 more source
Applied Sciences, 2023 Owing to the rapid development and broad adoption of multiple antenna communication systems over the past few years, space-time block coding (STBC) identification has emerged as a crucial responsibility for smart radios. The majority of previous analysis
Mohamed Marey, Hala Mostafa
doaj +1 more source
Transmission Scheme for Massive MIMO Systems Using Nulling‐Based Approach
Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.In this paper, a new transmission scheme is proposed for massive multiple‐input multiple‐output (MIMO) systems which will improve the performance of future 5G systems in terms of data rate and spectral efficiency, while accommodating a large number of users.
Prateek Anand +3 more
wiley +1 more source
, 2022 Significant and difficult technical challenges are imposed today on wireless networks, for example increasing capacity and reliability to achieve full data rate, full propagation diversity, comprehensively improve transmission synchronization ...
Aljadai, A.
core
Successive Interference Cancellation for DS-CDMA Systems with Transmit Diversity
EURASIP Journal on Wireless Communications and Networking, 2004 We introduce a new successive interference cancellation (SIC) technique for direct sequence code division multiple access (DS-CDMA) systems with transmit diversity. The transmit diversity is achieved with a space-time block code (STBC).
Li Wei, Gulliver T. Aaron
doaj +2 more sources
Optimal pilot pattern for data‐aided channel estimation for MIMO‐OFDM wireless systems
IET Communications, Volume 18, Issue 19, Page 1474-1484, December 2024.This article presents an optimal comb‐type pilot pattern for the data‐aided channel estimation (DACE) scheme for both single‐input single‐output (SISO) and multiple‐input multiple‐output orthogonal frequency division multiplexing (MIMO‐OFDM) wireless systems.
Inaamullah Khan, Michael Cheffena
wiley +1 more source
Performance of STBC Cooperative NOMA with Imperfect Successive Interference Cancellation
, 2021 This paper explores the performance gains achieved by space time block coding (STBC)-based non orthogonal multiple access (NOMA) scheme versus regular cooperative NOMA under the influence of imperfect successive interference cancellation (SIC ...
Hassan, Syed Ali, +7 more
core +1 more source