Multiaccess Interference Suppression in Orthogonal Space–Time Block Coded MIMO Systems by Adaptive Projected Subgradient Method

2008 ◽  
Vol 56 (3) ◽  
pp. 1028-1042 ◽  
Author(s):  
Renato L. G. Cavalcante ◽  
Isao Yamada
Keyword(s):  
Mimo Systems ◽  
Interference Suppression ◽  
Space Time ◽  
Subgradient Method ◽  
Time Block ◽  
Orthogonal Space

scholarly journals Waveform Design for Space–Time Coded MIMO Systems with High Secrecy Protection

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2003
Author(s):  
Pingping Shang ◽  
Hyein Lee ◽  
Sooyoung Kim
Keyword(s):  
Mimo Systems ◽  
Mimo System ◽  
Waveform Design ◽  
Space Time ◽  
Time Block ◽  
Performance Simulation ◽  
Space Time Coding ◽  
Block Coding ◽  
Coding Scheme ◽  
Orthogonal Space

In this paper, we present a new secrecy-enhancing scheme for multi-input-multi-output (MIMO) systems using a space–time coding scheme. We adopt a quasi-orthogonal space–time block coding (QO-STBC) scheme that was originally designed to improve the performance of the MIMO system, and propose an efficient waveform design that can enhance the secrecy, as well as improve the error rate performance. Channel- and signal-dependent artificial interference (AI) is added to the proposed waveform, so that only a legitimate receiver can successfully retrieve information. We investigate the secrecy capacity of the proposed scheme, and demonstrate that the proposed scheme provides highly enhanced secrecy performance, compared to the conventional schemes. The performance simulation results reveal that the transmitted information can be properly extracted only at the legitimate receiver.

MIMO-Orthogonal space time block code system joint with BCH-TC in Rayleigh fading channel for performance of transmit antenna selection

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nitin Tejram Deotale
Keyword(s):  
Mimo Systems ◽  
Antenna Selection ◽  
Turbo Code ◽  
Block Code ◽  
Space Time ◽  
Time Block ◽  
Transmit Antenna Selection ◽  
Content Type ◽  
Space Time Block Code ◽  
Orthogonal Space

Purpose To enhance the performance transmit antenna selection (TAS) of spatial modulation (SM), systems technique needs to be essential. This TAS is an effective technique for reducing the multiple input multiple output (MIMO) systems computational difficulty, and bit error rate (BER) can increase remarkably by various TAS algorithms. But these selection methods cannot provide code gain, so it is essential to join the TAS with external code to obtain cy -ode gain advantages in BER. Design/methodology/approach In this paper, Bose–Chaudhuri–Hocquenghem (BCH)-Turbo code TC is combined with the orthogonal space time block code system. Findings In some existing work, the improved BER has been perceived by joining forward error correction code and space time block code (STBC) for MIMO systems provided greater code gain. The proposed work can provide increasing code gain and the effective advantages of the TAS-OSTBC system. Originality/value To perform the system analysis, Rayleigh channel is used. In the case with multiple TAS-OSTBC systems, better performance can provide by this new joint of the BCH-Turbo compared to the conventional Turbo code for the Rayleigh fading.

scholarly journals Omnidirectional Quasi-Orthogonal Space–Time Block Coded Massive MIMO Systems

2019 ◽  
Vol 23 (9) ◽  
pp. 1621-1625 ◽  
Author(s):  
Can Liu ◽  
Xiang-Gen Xia ◽  
Yongzhao Li ◽  
Xiqi Gao ◽  
Hailin Zhang
Keyword(s):  
Massive Mimo ◽  
Mimo Systems ◽  
Space Time ◽  
Time Block ◽  
Orthogonal Space
Sign in / Sign up

Export Citation Format

Share Document