Multi-user chaos MIMO-OFDM scheme for physical layer multi-access security
نویسندگان
چکیده
منابع مشابه
Physical layer security for multi-user MIMO systems
T his thesis studies physical layer security for multi-user multiple-input multiple-output (MIMO) wireless systems. Due to the broadcast nature of the physical medium, wireless multi-user communications are very susceptible to eavesdropping, and it is critical to protect the transmitted information. Security of wireless communications has traditionally been achieved at the network layer with cr...
متن کاملMultilevel modulated chaos MIMO transmission scheme with physical layer security
Ensuring security at the physical layer in wireless communications is important and effective because it can omit upper-layer secure protocols in ad hoc or multi-hop relay transmissions, or it can enhance security together with upper-layer protocols. To realize this system, we have proposed a chaos-based multiple-input multiple-output (MIMO) transmission scheme that enables both physical-layer ...
متن کاملEnergy Efficient Multiple Access Scheme for Multi-User MIMO-OFDM System with Improved Gain
In this paper, to improve the energy efficiency (EE) of multi-user multiple-input multiple-output (MIMO) orthogonal frequency-division multiple access (OFDMA) system, an Energy-efficient multiple access (EMA) scheme is proposed. It improves EE by selecting either time-division multiple access (TDMA) or space-division multiple access (SDMA) based on the no. of users or power consumption. Here, w...
متن کاملMU-MIMO Scheme: Single Layer Multi-User Transmission
—Energy efficient multiple-input multiple-output (MIMO) with beamforming is one of the splendid ways to increase throughput in wireless networks. The existing schemes have focused on multi layer for multi-user. However, when multi layers for multi-user is implemented on wireless networks the system performance degrades in term of energy consumption, time and processing. The single layer multi-...
متن کاملAn Enhanced Leakage-Based Precoding Scheme for Multi-User Multi-Layer MIMO Systems
In this paper, we propose an enhanced leakage-based precoding scheme, i.e., layer signal to leakage plus noise ratio (layer SLNR) scheme, for multi-user multi-layer MIMO systems. Specifically, the layer SLNR scheme incorporates the MIMO receiver structure into the precoder design procedure, which makes the formulation of signal power and interference / leakage power more accurate. Besides, the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nonlinear Theory and Its Applications, IEICE
سال: 2014
ISSN: 2185-4106
DOI: 10.1587/nolta.5.172