Results 21 to 30 of about 274,920 (291)
Diversity-Multiplexing Gain Trade-off of a MIMO System with Relays [PDF]
, 2007 We find the diversity-multiplexing gain trade-off of a multiple-antenna (MIMO) system with M transmit antennas, N receive antennas, R relay nodes, and with independent Rayleigh fading, in which the relays apply a distributed space-time code.
Hassibi, Babak, Rao, Chaitanya
core +1 more source
Rooftop and indoor reception with transmit diversity applied to DVB-T networks: A long term measurement campaign [PDF]
, 2009 Although transmit Delay Diversity (DD) can provide a gain in indoor and other Non Line of Sight situations (NLOS), it can introduce degradation in rooftop reception. In fact, when the Ricean K factor of the channel is significantly high (e.g.
Arrinda, A +6 more
core +1 more source
EURASIP Journal on Advances in Signal Processing, 2004 With sophisticated signal and information processing algorithms, air interfaces with space-time (ST) coding and multiple reception antennas substantially improve the reliability of wireless links.
Zhang Zhan, Ilow Jacek
doaj +1 more source
, 2014 We investigate asymptotic capacity limits of the Gaussian MIMO broadcast channel (BC) with spatially correlated fading to understand when and how much transmit correlation helps the capacity.
Nam, Junyoung
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Wirelessly Powered Backscatter Communications: Waveform Design and SNR-Energy Tradeoff [PDF]
, 2017 This paper shows that wirelessly powered backscatter communications is subject to a fundamental tradeoff between the harvested energy at the tag and the reliability of the backscatter communication, measured in terms of SNR at the reader. Assuming the RF
Clerckx, Bruno +2 more
core +2 more sources
A Joint Precoding Scheme and Selective Transmit Diversity [PDF]
, 2004 We propose the use of the precoding (PC) scheme, which can be used to combat both the Multiple Access Interference (MAI) and Inter-Path Interference (IPI), combined with the Selective Transmit Diversity (STD) for high data rate transmissions. The proposed scheme is considered over frequency selective Rayleigh fading channels jointly with a RAKE in the ...
Correia, Américo +1 more
openaire +2 more sources
On the Capacity of Certain Space-Time Coding Schemes
EURASIP Journal on Advances in Signal Processing, 2002 We take a capacity view of a number of different space-time coding (STC) schemes. While the Shannon capacity of multiple-input multiple-output (MIMO) channels has been known for a number of years now, the attainment of these capacities remains a ...
Foschini Gerard J +1 more
doaj +1 more source
BER Analysis of STBC Codes for MIMO Rayleigh Flat Fading Channels [PDF]
Telfor Journal, 2012 The paper presents the analysis of Space-Time Block Codes (STBC) used in Multiple-Input Multiple-Output (MIMO) systems to assure transmit diversity. The receive diversity is resolved with a Maximum Ratio Combining technique.
L. A. Perişoară
doaj
On the ergodic sum-rate performance of CDD in multi-user systems
, 2007 The main focus of space-time coding design and analysis for MIMO systems has been so far focused on single-user systems. For single-user systems, transmit diversity schemes suffer a loss in spectral efficiency if the receiver is equipped with more than ...
Charafeddine, Mohamad +2 more
core +1 more source
Reduced-complexity transmit/receive-diversity systems [PDF]
IEEE VTS 53rd Vehicular Technology Conference, Spring 2001. Proceedings (Cat. No.01CH37202), 2002 We consider wireless systems with transmit and receive diversity. For reduction of complexity, we propose to use hybrid selection/maximal-ratio transmission at one link end, choosing L out of N antennas. We analyze the performance of such systems, giving analytical bounds and comparing them with computer simulations.
Andreas F. Molisch +2 more
openaire +1 more source