Description: 包括4天线准正交码的编码和解码程序，其中解码程序包括部分行的合并解码-Including 4 antenna quasi-orthogonal code encoding and decoding procedures, which include decoding part decoding the combined line Platform: |
Size: 1024 |
Author:谷雨 |
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Description:
This program simulates the bit-error-rate (BER) performance of OSTBC
with L=4 antennas over the frequency flat Rayleigh block fading channel
The code is developed for real orthogonal design, code rate 1/2
modulation- 16 QAM with gray coding resulting in 2 bits/sec/Hz.-This program simulates the bit-error-rate (BER) performance of OSTBC with L = 4 antennas over the frequency flat Rayleigh block fading channel The code is developed for real orthogonal design, code rate 1/2 modulation-16 QAM with gray coding resulting in 2 bits/sec/Hz. Platform: |
Size: 1024 |
Author:george |
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Description: This paper analyzes the performance of phase
feedback, quasi-orthogonal space-time block codes (QOSTBC)
and Extended OSTBC systems in the presence of
feedback delay, feedback error and amount of channel
feedback. Space-time code constructed for nT transmit
antennas can easily be extended to nT×p antennas transmit
based on a feedback of only p-1 bits. This paper shows that
more feedback bits (more than p-1 bits) in ideal system
(EOSTBC system with no feedback delay and no feedback
error) cause no more considerable performance in the
system. But in the inaccurate feedback information with
increasing feedback bits from p-1 bits decrease sensitivity of
system and increase performance considerably. This paper
obtains an upper bound for phase feedback error respect to
number of feedback bits. Moreover it shows that the system
can select adaptively one of the three modes, phase only
feedback, EO-STBC and QO-STBC with respect to
reliability and amount of feedback information. Platform: |
Size: 797696 |
Author:serag |
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Description: The paper proposes address a new representation of the DFT matrix via the Reverse Jacket Transform(RJT) based on the WHT, and propose a simple approach for space time block codes (STBC) design. Using the proposed approach (J=H.S) the quasi-orthogonal STBC may be designed easily. Especially the performance of the code can be improved. Platform: |
Size: 162816 |
Author:fia4joy |
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Description: Orthogonal STBC [4], [5] has been designed to achieve the spatial diversity offered by multiple transmit and/or receive antennas. The STBC
schemes proposed in [4] and [5] are designed for flat-fading channels,
which lead to a performance degradation in time- and frequency-selective channels. Our goal is to design efficient STBC schemes to counteract the effects of doubly-selective channels. The basic idea of the
proposed STBC for a 21 system is to multiplex the data sequence
in two data subsequences and to generate two orthogonal full-diversity
subchannels over doubly-selective channels. Then, we apply a scheme
that is similar to the Alamouti code. Platform: |
Size: 1024 |
Author:phuong |
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Description: In this letter, we consider a half-duplex amplify-andforward two-way relaying network consisting of two sources with each having a single antenna and one relay having two antennas.
For such a system, a distributed orthogonal space-time block code (STBC) is proposed by making use of the Alamouti coding
scheme and jointly processing the signals the two antennas at the relay node. Such a code turns out to make the equivalent channel at each source node be a product of the two Alamouti
channels and thus, is called distributed concatenated Alamouti STBC.-In this letter, we consider a half-duplex amplify-andforward two-way relaying network consisting of two sources with each having a single antenna and one relay having two antennas.
For such a system, a distributed orthogonal space-time block code (STBC) is proposed by making use of the Alamouti coding
scheme and jointly processing the signals the two antennas at the relay node. Such a code turns out to make the equivalent channel at each source node be a product of the two Alamouti
channels and thus, is called distributed concatenated Alamouti STBC. Platform: |
Size: 162816 |
Author:Hakim |
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Search - Orthogonal STBC code