Results 21 to 30 of about 2,916 (209)
IEEE Access, 2023 Information is conveyed by either time, antenna, and/or frequency in the conventional modulation. In this paper, we propose a novel technique to convey information in Alamouti space-time block coding systems.
Hongjun Xu +2 more
doaj +1 more source
Reduced-complexity Soft STBC detection [PDF]
2012 IEEE Global Communications Conference (GLOBECOM), 2012 In this paper, we propose to reduce the complexity of both the Approx-Log-MAP algorithm as well as of the Max-Log-MAP algorithm, which were designed for soft-decision-aided Space-Time Block Code (STBC) detectors. First of all, we review the STBC design, which enables regular L-PSK/QAM detectors to be invoked in order to detect STBCs on a symbol-by ...
Chao Xu 0005 +4 more
openaire +1 more source
A Fast Recursive Algorithm for G-STBC [PDF]
IEEE Transactions on Communications, 2011 TCOM
Hufei Zhu +3 more
openaire +2 more sources
FULL-RATE SPACE-TIME BLOCK CODE FOR FOUR TRANSMIT ANTENNAS WITH LINEAR DECODING
Jordanian Journal of Computers and Information Technology, 2020 This paper proposes a new full-rate space-time block code for MIMO systems at four transmit antennas, which aims at minimizing the bit error rate with low-complexity decoding using ZF and MMSE linear detection techniques in Rayleigh fading channels ...
Younes Djemamar +2 more
doaj +1 more source
Blind Space Time Block Coding Categorization over AF Relaying Broadcasts
Applied Sciences, 2023 Categorization of space time block code (STBC) signals has become widely acknowledged as a crucial foundational mechanism for creating intelligent wireless transmissions in both the governmental and business sectors.
Mohamed Marey, Hala Mostafa
doaj +1 more source
Konsep Transmisi Tidak Koheren menggunakan Differential Unitary Modulation pada OFDMA
Jurnal Elkomika, 2021 ABSTRAK Differential modulation adalah sebuah teknik modulasi yang memungkinkan pengiriman informasi tanpa diperlukannya estimasi kondisi kanal di sisi penerima.
DHONI PUTRA SETIAWAN +2 more
doaj +1 more source
Mirror activation pattern selection for energy efficient hexagonal QAM aided media‐based modulation
Transactions on Emerging Telecommunications Technologies, Volume 34, Issue 7, July 2023., 2023 Capacity optimized‐based MAP selection (CMS), MAP correlation based MS (MMS), and Euclidean distance based MS (EMS) techniques are presented for energy efficient hexagonal quadrature amplitude modulation to enhance the performance of the media‐based modulation (MBM) system. The proposed system, called MS‐HMBM for short, provides high energy efficiency,
Burak Ahmet Ozden +2 more
wiley +1 more source
Evaluation of the security performance of artificial noise‐aided STBC systems
IET Communications, Volume 17, Issue 9, Page 1081-1090, June 2023., 2023 In this paper, we evaluate the security performance of artificial noise (AN)‐aided space time block coding (STBC) systems in wiretap channel. We derive a generalized secrecy rate formula for the system utilizing AN‐aided STBC, and also provide an expression for the approximated value with which the estimation time can be highly reduced. In addition, it
Hyein Lee, Sooyoung Kim
wiley +1 more source
Pilot‐aided 1 × 2 and 2 × 2 space‐time line code systems with transmit antenna selection
International Journal of Communication Systems, Volume 36, Issue 4, 10 March 2023., 2023 We propose 1 × 2 and 2 × 2 pilot‐aided STLC systems do not require the effective channel gain at the receiver to detect the MQAM symbols. Transmit antenna selection (TAS) is also applied. For a given number of transmit antennas, the simulated and theoretical error performances show that the error performance of pilot‐aided 2 × 2 STLC systems with or ...
Hongjun Xu +2 more
wiley +1 more source
IET Communications, Volume 16, Issue 20, Page 2479-2491, December 2022., 2022 Abstract Due to the importance of both rate‐less digital fountain codes and Multi‐Input Multi‐Output (MIMO) schemes in Fifth and Sixth Generation (5G/6G) wireless networks, this paper investigates enhancing the performance of MIMO‐Orthogonal Frequency Division Multiplexing (MIMO‐OFDM) based system by employing the rate‐less fountain codes.
H. Kasban +4 more
wiley +1 more source