Effects of the transmission channel on the LS-CMA based beamformer in mobile communications

Banitalebi, Behnam; Kamarei, Mahmoud; Karimi, Mahmood; Dadashzadeh, Gholamreza

doi:10.1109/antem.2005.7852031

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…By taking the IQ imbalances into account, the received signal vector can be written as: is uncorrelated with the transmitting signal. One can approximately model it as an ordinary noise which degrades the signal quality by decreasing the SNR (also confirmed by [8]). The first two errors in m A not only affect the phase of the existing term, but also add an undesired term which is correlated with the desired one.…”

Section: Code Structure and ML Detection Techniquementioning

confidence: 99%

Performance comparison of different STBC codes in the presence of IQ imbalances in mobile communications

Banitalebi

2008

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications

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Section: Code Structure and ML Detection Techniquementioning

confidence: 99%

Performance comparison of different STBC codes in the presence of IQ imbalances in mobile communications

Banitalebi

2008

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications

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“…The impact of the other effects of the transmission channel such as amplitude and phase error and time delay on the LS-CMA based beamformer is investigated in [1].…”

Section: Signal and Channel Modelsmentioning

confidence: 99%

“…Since these errors are occurred because of non ideal mobile communications environment, their effects can not be controlled efficiently. In [1] the effects of these parameters on the beamformer performance are investigated in detail. But there is another kind of signal parameters which can efficiently change the beamformer performance and also can be controlled by transmitter or receiver.…”

Section: Introductionmentioning

confidence: 99%

Effect of Modifying Signal Parameters on the Beamforming Performance in CDMA Mobile Communications

Banitalebi

Karimi

Kamarei³

et al.

2005 Asia-Pacific Conference on Communications

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Abstract-In mobile communications, beamforming is one of the most efficient techniques to suppress undesired effects of the transmission channel. In a CDMA mobile communications system, there are some parameters such as PN code length of the CDMA signals and modulation type and order that usually are changed to increase the capacity and data bit rate. Variation of these parameters can change the beamformer performance.In this paper, effect of changing these parameters on the beamformer performance is investigated both theoretically and by using simulations. These investigations show that the above parameters have different effects on the beamformer performance.

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Impact of the Undesired RF-IF Chain Effects on the LS-CMA based Beamformer in CDMA Mobile Communications

Banitalebi

Kamarei

Karimi

et al. 2006

2006 IEEE International Conference on Industrial Technology

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Effects of the transmission channel on the LS-CMA based beamformer in mobile communications

Cited by 3 publications

References 8 publications

Performance comparison of different STBC codes in the presence of IQ imbalances in mobile communications

Performance comparison of different STBC codes in the presence of IQ imbalances in mobile communications

Effect of Modifying Signal Parameters on the Beamforming Performance in CDMA Mobile Communications

Impact of the Undesired RF-IF Chain Effects on the LS-CMA based Beamformer in CDMA Mobile Communications

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