نتایج جستجو برای: orthogonal space time block coding

تعداد نتایج: 2503512  

Journal: :IEEE Trans. Vehicular Technology 2008
Chau Yuen Yong Liang Guan Tjeng Thiang Tjhung

—In this paper, we propose two new systematic ways to construct amicable orthogonal designs (AOD), with an aim to facilitate the construction of power-balanced orthogonal space-time block codes (O-STBC) with favorable practical attributes. We also show that an AOD can be constructed from an Amicable Family (AF), and such a construction is crucial for achieving a power-balanced O-STBC. In additi...

2013
Salim Abdelkareem Alkhawaldeh

The combination of CDMA and space time block coding (STBC) has been proposed for indoor environment where the delay spreads are very small and the channel is flat fading. However, these schemes are not valid for the outdoor situation where the delay spreads are significantly large and the channel is frequency selective fading. Therefore, in our paper, we propose CDMA with space-time block codin...

Journal: :International Journal of Communications, Network and System Sciences 2009

Journal: :IEEE Trans. Signal Processing 2007
Hakam Mheidat Murat Uysal Naofal Al-Dhahir

Quasi-orthogonal space–time block codes (QO-STBCs) are a powerful code family designed for more than two transmit antennas. In contrast to their orthogonal counterparts designed for the same number of transmit antennas, QO-STBCs are able to provide full-rate transmission rate. While original QO-STBCs enjoy only a partial diversity, the recently proposed rotated versions of QO-STBCs achieve the ...

2004
Larry Younkins

Title of Dissertation: ON THE PERFORMANCE OF MULTI-ANTENNA TECHNIQUES FOR SPATIALLY AND TEMPORALLY CORRELATED WIRELESS CHANNELS Larry T. Younkins, Doctor of Philosophy, 2004 Dissertation directed by: Professor K.J. Ray Liu Department of Electrical and Computer Engineering As the demand for advanced wireless services continues to grow, system designers must employ innovative signal processing te...

Journal: :IEEE Journal on Selected Areas in Communications 1999
Vahid Tarokh Hamid Jafarkhani A. Robert Calderbank

We document the performance of space–time block codes [13], [14], which provide a new paradigm for transmission over Rayleigh fading channels using multiple transmit antennas. Data is encoded using a space–time block code, and the encoded data is split into n streams which are simultaneously transmitted using n transmit antennas. The received signal at each receive antenna is a linear superposi...

2001
Cristian Budianu Lang Tong

Space-time coding is an efficient technique to exploit transmitting and receiving diversities for wireless channels. One of the key components in the design of receivers for space-time codes is channel estimation. For the block codes based on orthogonal design proposed by Alamouti and Tarokh, a new class of pilot assisted channel estimation schemes are presented where pilot symbols are superimp...

2012
S. Rajalakshmi

A New method of MIMO signalling and coding transmission scheme called Space Time Block Coded Generalised Spatial Modulation (STBC-GSM) under spatially correlated Quasi static Rayleigh fading channel condition , with the low complexity maximum likelihood decoder .It is the combination of space time block code with the generalised spatial modulation .The transmitted information symbols in the ort...

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