Results 21 to 30 of about 60,674 (300)

Near-Capacity Transceiver Design Using Exit-Curve Fitting: Three-Stage Turbo Detection of Irregular Convolutional Coded Joint Sphere-Packing Modulation and Space-Time Coding [PDF]

, 2007
Conventional two-stage turbo-detected schemes typically suffer from a Bit Error Rate (BER) floor, preventing them from achieving infinitesimally low BER values, especially, when the inner coding stage is of non-recursive nature.
Yang, L.-L., Ng, S.X., Alamri, O., S. X. Ng, J. Wang, L.-L. Yang, O. Alamri, L. Hanzo, Wang, J., Hanzo, L.   +9 more
core   +1 more source

A Purely Symbol-Based Precoded and LDPC-Coded Iterative-Detection Assisted Sphere-Packing Modulated Space-Time Coding Scheme [PDF]

, 2006
In this contribution, we propose a purely symbol-based LDPC-coded scheme based on a Space-Time Block Coding (STBC) signal construction method that combines orthogonal design with sphere packing, referred to here as (STBCSP).
F. Guo, Alamri, O., Ng, S. X., O. Alamri, S.X. Ng, L. Hanzo, Hanzo, L., Guo, F.   +7 more
core   +1 more source

Concatenated space-time block coding with asymmetric MPSK TCM

Tongxin xuebao, 2010
The field of concatenated space-time block coding （inner） with trellis coded modulation （outer） has recently attracted interest as a means of jointly considering the error correction coding gain and diversity gain possible without bandwidth expansion and
AO Jun1, MA Chun-bo1, AO Fa-liang1, LIAO Gui-sheng2   +3 more
doaj   +2 more sources

Block turbo codes for space-time systems

Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137), 2002
Advances in the field of information theory have shown that wireless systems using multiple transmitters and multiple receivers can significantly improve the spectral efficiency. Systems using transmit and receive diversity associated with coding such as space time trellis codes have since been developed.
Amis Cavalec, Karine, Pyndiah, Ramesh
openaire   +2 more sources

Analysis and Demonstration of Quasi Trace Orthogonal Space Time Block Coding for Visible Light Communications

IEEE Access, 2020
In the VLC context, pulse position modulation (PPM) and similar modulations are typically used when the overall complexity of the transmitter is required to be low or the system needs to support dimming, i.e., dynamically control the illumination level ...
Mauro Biagi, Navid Bani Hassan, Khald Werfli, Thai-Chien Bui, Zabih Ghassemlooy   +4 more
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

Coding advantage optimization of space-time-frequency block codes [PDF]

Journal of Communications and Networks, 2020
In this article, we study the coding advantage of space-time-frequency block codes (STFBCs). Since in MIMO-OFDM coding there is the potential of exploiting space, time and frequency diversities and as the frequency tones of OFDM modulation are relatively substantial, the intricate structure of STFBCs makes it almost impossible to optimize the ...
Vahid Momenaei Kermani, Hossein Momenaee Kermani, Alireza Morsali   +2 more
openaire   +1 more source

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source

Performance of multiple amplitudes differential space-time block coding scheme concatenated with channel coding

Tongxin xuebao, 2007
By introducing multiple levels quadrature amplitude modulation and matrix transform method,a multiple am-plitudes differential space-time coding（DSTC） scheme was developed.The scheme can avoid the performance loss of conventional DSTC schemes based on ...
YU Xiang-bin1, ZHANG Sheng-nan1, BI Guang-guo2   +2 more
doaj   +2 more sources

Efficiency Improvement of Space Time Block Codes

International Journal of Communications, Network and System Sciences, 2010
Unlike most of the existing methods in Space Time coding (STC) system which focus on design of STC gaining full rate and/or maximum diversity, we propose an approach to improve spectral efficiency of the code. The proposed scheme carries more information symbols in each transmission block as compared to its counterpart code, and yet retains the ...
Zahoor Ahmed Baloch, Mohammad Usman Baloch, Noor Hussain   +2 more
openaire   +2 more sources