文件名称:stbcall.m
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tgrr yggg ggg yttt
Space time block coding (STBC) and beamforming
techniques are two emerging technologies that can be
employed at base station with multiple antenna to provide
transmit diversity and beamforming gain to increase signal-to-
noise ratio (SNR) of the downlink. STBC utilizes a diversity
antenna system where the antenna spacing is usually required
to be large enough, say 10 times wavelength of the carrier for
a uniform linear array (ULA) in small angular spread
environments, to obtain low-correlation/independent fading
channels. While the beamforming antenna needs to achieve
spatial directivity and the signals received at and/or
transmitted from all antennas must be correlated or coherent.
So the antenna spacing should usually be very small, e.g. half
wavelength for ULA.
-tgrr ygggggggggggg ytttttt
Space time block coding (STBC) and beamforming
techniques are two emerging technologies that can be
employed at base station with multiple antenna to provide
transmit diversity and beamforming gain to increase signal-to-
noise ratio (SNR) of the downlink. STBC utilizes a diversity
antenna system where the antenna spacing is usually required
to be large enough, say 10 times wavelength of the carrier for
a uniform linear array (ULA) in small angular spread
environments, to obtain low-correlation/independent fading
channels. While the beamforming antenna needs to achieve
spatial directivity and the signals received at and/or
transmitted from all antennas must be correlated or coherent.
So the antenna spacing should usually be very small, e.g. half
wavelength for ULA.
Space time block coding (STBC) and beamforming
techniques are two emerging technologies that can be
employed at base station with multiple antenna to provide
transmit diversity and beamforming gain to increase signal-to-
noise ratio (SNR) of the downlink. STBC utilizes a diversity
antenna system where the antenna spacing is usually required
to be large enough, say 10 times wavelength of the carrier for
a uniform linear array (ULA) in small angular spread
environments, to obtain low-correlation/independent fading
channels. While the beamforming antenna needs to achieve
spatial directivity and the signals received at and/or
transmitted from all antennas must be correlated or coherent.
So the antenna spacing should usually be very small, e.g. half
wavelength for ULA.
-tgrr ygggggggggggg ytttttt
Space time block coding (STBC) and beamforming
techniques are two emerging technologies that can be
employed at base station with multiple antenna to provide
transmit diversity and beamforming gain to increase signal-to-
noise ratio (SNR) of the downlink. STBC utilizes a diversity
antenna system where the antenna spacing is usually required
to be large enough, say 10 times wavelength of the carrier for
a uniform linear array (ULA) in small angular spread
environments, to obtain low-correlation/independent fading
channels. While the beamforming antenna needs to achieve
spatial directivity and the signals received at and/or
transmitted from all antennas must be correlated or coherent.
So the antenna spacing should usually be very small, e.g. half
wavelength for ULA.
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stbcall.m