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Distributed Space Time Block Code in Asynchronous Cooperative Networks (Paperback)
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Distributed Space Time Block Code in Asynchronous Cooperative Networks (Paperback)
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Space- Time Block Coding (STBC) are used to improve the
transmission reliably and spectral efficiency of MIMO systems. The
cooperative communication techniques can avoid the difficulties of
implementing actual antennas array by converting the single-input
single-output (SISO) system into a virtual multiple-input
multiple-output (MIMO) system. When STBC applied to cooperative
diversity the system termed as Distributed Space Time Block Code
(D-STBC). Most of the existing research assumes perfect
synchronization among cooperative users in D-STBC. Unfortunately,
perfect synchronization is almost impossible to be achieved.
Therefore, most of the designed space-time codes are no longer
valid. There are different research efforts to overcome this
problem; most of which has high decoding complexity. In this
research, two low decoding complexity schemes for imperfect
synchronized D-STBC have been proposed. The first scheme is based
on the principle of parallel interference cancellation (PIC),
whereas the other is based on successive interference cancellation
(SIC). These approaches have been proved to be a very effective in
suppressing the impact of imperfect synchronization.
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