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: Both these questions can be answered by assuming a restrictive yet
simple doubly-selective channel model. More specifically, we assume
ablock fading CCE-BEMchannel, which is defined as a block fading
channel where the time-variation subblock to subblock is modeled by a CCE-BEM. Hence, we first develop and analyze the STBC
under this block fading CCE-BEM channel model, and then, we show
how to decode the STBC for real-life channels, which do not exactly
fit this block fading CCE-BEM channel model-Both these questions can be answered by assuming a restrictive yet
simple doubly-selective channel model. More specifically, we assume
ablock fading CCE-BEMchannel, which is defined as a block fading
channel where the time-variation subblock to subblock is modeled by a CCE-BEM. Hence, we first develop and analyze the STBC
under this block fading CCE-BEM channel model, and then, we show
how to decode the STBC for real-life channels, which do not exactly
fit this block fading CCE-BEM channel model Platform: |
Size: 1024 |
Author:phuong |
Hits:
Search - stbc selective fading