MIMO Broadcast Channels With Finite-Rate Feedback
نویسندگان
چکیده
منابع مشابه
Finite Rate Feedback MIMO Broadcast Channels
This paper summarizes recent results on the multiple antenna broadcast (downlink) channel with finite rate feedback of channel state information from each receiver. In this model, the receivers are assumed to have perfect channel knowledge, while the transmitter gains channel knowledge through a finite rate feedback channel from each receiver. The SNR degradation as a function of the feedback r...
متن کاملBroadcast Channels with Delayed Finite-Rate Feedback: Predict or Observe?
Most multiuser precoding techniques require accurate transmitter channel state information (CSIT) to maintain orthogonality between the users. Such techniques have proven quite fragile in time-varying channels because the CSIT is inherently imperfect due to estimation and feedback delay, as well quantization noise. An alternative approach recently proposed by Maddah-Ali and Tse (MAT) allows for...
متن کاملDifferentiated Rate Sceduling for MIMO Broadcast Channels∗
We consider the problem of differentiated rate scheduling for the fading MIMO Gaussian broadcast channel, in the sense that the rates required by different users must satisfy certain rational rate constraints. When full channel state information (CSI) is available at the transmitter, the problem can be readily solved using dirty paper coding (DPC) and convex optimization techniques on the dual ...
متن کاملExploiting Multiuser Diversity in MIMO Broadcast Channels with Limited Feedback
We consider a multiple antenna broadcast channel in which a base station equipped with M transmit antennas communicates with K ≥ M single-antenna receivers. Each receiver has perfect channel state information (CSI), whereas the transmitter has partial channel knowledge obtained via a limited rate feedback channel. Built upon multiuser interference bounds, we propose scalar feedback metrics that...
متن کاملOn Optimizing Feedback Interval for Temporally Correlated MIMO Channels With Transmit Beamforming And Finite-Rate Feedback
Assuming perfect channel state information (CSI), a receiver in a point-to-point MIMO channel can compute the transmit beamforming vector that maximizes the transmission rate. For frequencydivision duplex, a transmitter is not able to estimate CSI directly and has to obtain a quantized transmit beamforming vector from the receiver via a rate-limited feedback channel. We assume that time evoluti...
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: 2006
ISSN: 0018-9448
DOI: 10.1109/tit.2006.883550