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3,194
A Simple Transmit Diversity Technique for Wireless Communications
, 1998
"... This paper presents a simple two-branch transmit diversity scheme. Using two transmit antennas and one receive antenna the scheme provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas. It is also shown that the scheme may ea ..."
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Cited by 2127 (0 self)
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This paper presents a simple two-branch transmit diversity scheme. Using two transmit antennas and one receive antenna the scheme provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas. It is also shown that the scheme may
Transmit Diversity with Channel Feedback
- in Proceedings International Symposium on Telecommunications
, 2001
"... Transmit diversity in the presence of channel feedback at the transmitter is analyzed in this paper. We first consider perfect channel feedback and summarize the beamforming solution which minimizes the codeword error probability. We note that the error probability minimizing scheme is different fro ..."
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Cited by 5 (2 self)
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Transmit diversity in the presence of channel feedback at the transmitter is analyzed in this paper. We first consider perfect channel feedback and summarize the beamforming solution which minimizes the codeword error probability. We note that the error probability minimizing scheme is different
Transmit Diversity with Constrained Feedback
"... antenna systems are attractive for achieving diversity in the downlink of cellular systems. However, closed-loop transmission scheme requires the terminal to use the uplink channel to inform the base station the full state of its downlink channels. The amount of feedback is proportional to the numbe ..."
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to the number of transmit an-tennas and the channel’s delay spread, and it can be substantial. In this paper we present an alternative transmit diversity scheme called TDCF (Transmit Diversity with Constrained Feedback) which uses only partial channel feedback. Our approach is based on approximation
A differential detection scheme for transmit diversity
- IEEE J. Select. Areas Commun
, 2000
"... Abstract—We present a transmission scheme for exploiting diversity given by two transmit antennas when neither the transmitter nor the receiver has access to channel state information. The new detection scheme can use equal energy constellations and encoding is simple. At the receiver, decoding is a ..."
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Cited by 215 (7 self)
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Abstract—We present a transmission scheme for exploiting diversity given by two transmit antennas when neither the transmitter nor the receiver has access to channel state information. The new detection scheme can use equal energy constellations and encoding is simple. At the receiver, decoding
On Optimality of Closed-Loop Transmit Diversity
"... Transmit diversity techniques provide attractive solutions for increasing downlink capacity in 3G systems within low--mobility environments, and open--loop and closed--loop transmit diversity modes with two transmit antennas have already been included into 3GPP WCDMA specification. In this paper we ..."
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Transmit diversity techniques provide attractive solutions for increasing downlink capacity in 3G systems within low--mobility environments, and open--loop and closed--loop transmit diversity modes with two transmit antennas have already been included into 3GPP WCDMA specification. In this paper we
Joint beamforming and transmit diversity for WCDMA
- Joint RTO IST and SET Symposium on ‘Smart Antennas’, RTO-MP-119
, 2003
"... The current work develops an efficient scheme to be used for the downlink of a WCDMA network, using transmitter diversity and beamforming. The performances of space-time transmit diversity (STTD) in combination with selective transmit diversity (STD), beamforming (BF) and beam sele ctive transmit di ..."
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Cited by 1 (1 self)
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The current work develops an efficient scheme to be used for the downlink of a WCDMA network, using transmitter diversity and beamforming. The performances of space-time transmit diversity (STTD) in combination with selective transmit diversity (STD), beamforming (BF) and beam sele ctive transmit
Transmit Diversity with Interference Suppression in EDGE
, 2001
"... The third generation mobile systems are under development and one of the systems that is considered is EDGE or Enhanced Data rates for Global Evolution. In this thesis the focus for improved bit rates is on transmit diversity and on interference suppression by whitening of the interferer. Two transm ..."
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The third generation mobile systems are under development and one of the systems that is considered is EDGE or Enhanced Data rates for Global Evolution. In this thesis the focus for improved bit rates is on transmit diversity and on interference suppression by whitening of the interferer. Two
Spectrum-Efficient OFDM Transmit Diversity
, 2008
"... In this paper, we propose a subcarrier allocation method and a composite linear minimum mean square error (LMMSE) channel estimator to increase spectrum efficiency in orthogonal frequency division multiplexing (OFDM) transmit diversity. The pilot symbols for OFDM transmit (Alamouti) diversity are ex ..."
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In this paper, we propose a subcarrier allocation method and a composite linear minimum mean square error (LMMSE) channel estimator to increase spectrum efficiency in orthogonal frequency division multiplexing (OFDM) transmit diversity. The pilot symbols for OFDM transmit (Alamouti) diversity
Feasibility of Transmit Diversity for IS-136 TDMA Systems
"... Abstract- In this paper, we investigate the performance of transmit diversity technique operating in IS-136 TDMA systems where the Doppler frequency can be as high as 184Hz. Transmit diversity transforms a pat fading channel into a frequency selective fading channel, thus we use finite length decisi ..."
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Abstract- In this paper, we investigate the performance of transmit diversity technique operating in IS-136 TDMA systems where the Doppler frequency can be as high as 184Hz. Transmit diversity transforms a pat fading channel into a frequency selective fading channel, thus we use finite length
Results 1 - 10
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3,194