Distributed Transmit Beamforming Using Feedback Control
نویسندگان
چکیده
منابع مشابه
Interpolation Based Transmit Beamforming for MIMO-OFDM with Partial Feedback
Transmit beamforming with receive combining is a simple method for exploiting the significant diversity provided by multiple-input multiple-output (MIMO) systems, and the use of orthogonal frequency division multiplexing (OFDM) enables low complexity implementation of this scheme over frequency selective MIMO channels. Optimal beamforming requires channel state information in the form of the be...
متن کاملPerformance Analysis for Transmit-Beamforming with Finite-Rate Feedback
Transmit beamforming achieves optimal performance in systems with multiple transmitand single receiveantennas, when perfect channel knowledge is available at the transmitter. In practical systems where the feedback link can only convey a finite number of bits, the beamformer design has been extensively investigated from both the outage probability and the average signal to noise ratio (SNR) per...
متن کاملWhen is Limited Feedback for Transmit Beamforming Useful?
Multi-antenna systems have been shown to offer tremendous capacity increase in ideal rich scattering conditions. Transmit beamforming and receive combining are low complexity techniques that help in achieving the full diversity afforded by the multiantenna channel. Even if complete channel knowledge at the receiver maybe a realistic assumption in these systems, the same may not be true at the t...
متن کاملPrediction error based feedback for downlink transmit beamforming
This paper examines a downlink transmit beamforming scheme recently proposed in [1]. The idea is based on the use of an adaptive channel estimator at the base-station and requires the mobile to selectively feed back the value of the prediction error. This paper proposes a joint maximum-likelihood and set-membership filtering algorithm for adaptive channel estimation that provides robustness aga...
متن کاملOptimum Beamforming Using Transmit Antenna Arrays
Transmit beamforming is a powerful means of increasing capacity in systems in which the transmitter is equipped with an antenna array, especially in systems in which receive beamforming is not available, as is typical in the base-to-mobile \downlink" in a cellular communication system. In this paper, the problem of transmit beamforming is formulated as one of minimizing the power radiated by th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 2010
ISSN: 0018-9448,1557-9654
DOI: 10.1109/tit.2009.2034786