Results 11 to 20 of about 1,055,903 (287)
Generalized PSK in Space Time Coding [PDF]
IEEE Transactions on Communications, 2004 A wireless communication system using multiple antennas promises reliable transmission under Rayleigh flat fading assumptions. Design criteria and practical schemes have been presented for both coherent and non-coherent communication channels.
Han, Guangyue
core +6 more sources
High-Resolution and Wide-Swath SAR Imaging with Space–Time Coding Array
Remote Sensing, 2023 To achieve high-resolution and wide-swath (HRWS) synthetic aperture radar (SAR) images, this paper focuses on resolving the problem of separating range-ambiguous echoes with the space–time coding (STC) array.
Kun Yu, Shengqi Zhu, Lan Lan, Biao Yang
doaj +1 more source
Co-Efficient Vector Based Differential Distributed Quasi-Orthogonal Space Time Frequency Coding
Sensors, 2023 Distributed space time frequency coding (DSTFC) schemes address problems of performance degradation encountered by cooperative broadband networks operating in highly mobile environments.
Nnamdi Nwanekezie +3 more
doaj +1 more source
Joint time-frequency analysis on space-time-coding digital metasurfaces
JPhys Photonics, 2022 Space-time and time-varying metastructures have attracted a lot of research interest in recent years. On the other hand, digital programmable metasurfaces have also gained great attention owing to their powerful capabilities in controlling ...
Xiao Qing Chen +5 more
doaj +1 more source
Orthogonal Space Time Block Coding for Spatial Pulse Position Modulation
Guangtongxin yanjiu, 2021 The system performance of Spatial Pulse Position Modulation (SPPM) is poor in turbulent channels. In order to solve this problem, the bit complement orthogonal space time Block Coding for Spatial Pulse Position Modulation (BCOSTBCSPPM) is proposed by ...
Zhong-yang MAO +5 more
doaj +1 more source
Space-time network coding [PDF]
IEEE Transactions on Signal Processing, 2011 Traditional cooperative communications can improve communication reliability. However, transmissions from multiple relay nodes are challenging in practice. Single transmissions in time-division multiple-access (TDMA) manner cause large transmission delay, but simultaneous transmissions from two or more nodes using frequency-division multiple access ...
Hung-Quoc Lai, K. J. Ray Liu
openaire +1 more source
IEEE Access, 2018 This paper characterizes rate-one (i.e., full rate) full-spatial-diversity-achieving communication schemes based on the channel state information (CSI) availability and antenna configurations, i.e., CSI at a transmitter (CSIT) or CSI at a receiver (CSIR) and the numbers of transmit and receive antennas $M$ and $N$ (denoted by $M\times N$
Ngoc-Dung Dào, Chintha Tellambura
openaire +2 more sources
Enhancing MIMO Capacity Through Space-Time Coding: Analysis And Design Framework
Journal of Informatics and Web Engineering, 2023 Space-time coding combines time and space to generate codewords, transmitting signals in both time and space domains. This leads to not only diversity and coding gains but also reduces the impact of multipath fading, resulting in high spectral ...
Lijun Han +3 more
doaj +1 more source
Layered Space-Time Index Coding [PDF]
IEEE Transactions on Information Theory, 2018 Multicasting $K$ independent messages via multiple-input multiple-output (MIMO) channels to multiple users where each user already has a subset of messages as side information is studied. A general framework of constructing layered space-time index coding (LSTIC) from a large class of space-time block codes (STBC), including perfect STBC, is proposed ...
Yu-Chih Huang +3 more
openaire +3 more sources
Cooperative space-time codes with network coding [PDF]
EURASIP Journal on Wireless Communications and Networking, 2012 Because of the gains like diversity, throughput, and the coverage extension provided by the multiple-input multiple-out (MIMO) systems, it has been part of the various wireless communications standards. However, to reap the benefits offered by MIMO systems in size-constrained nodes, used in wireless communications, has been a challenging issue.
Gordhan Das Menghwar +4 more
openaire +1 more source