On the overhead of interference alignment: Training, feedback, and cooperation

O El Ayach, A Lozano, RW Heath - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
… training and analog feedback. We design the training and feedback system to maximize IA’s
… accounts for estimation error, training and feedback overhead, and channel selectivity. We …

Feedback-topology designs for interference alignment in MIMO interference channels

S Cho, K Huang, DK Kim, VKN Lau… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
feedback overhead, this paper focuses on designing efficient arrangements of feedback links,
called feedback … ) -user interference channel, we propose the feedback topology that sup…

Efficient feedback design for interference alignment in MIMO interference channel

S Cho, H Chae, K Huang, D Kim… - 2012 IEEE 75th …, 2012 - ieeexplore.ieee.org
… transmitters, resulting in overwhelming feedback overhead. To substantially suppress the
feedback overhead, this paper proposes an efficient design of the feedback framework for IA in …

Interference alignment with analog channel state feedback

O El Ayach, RW Heath - IEEE Transactions on Wireless …, 2011 - ieeexplore.ieee.org
… While IA can be used with any receiver design, to simplify exposition we consider a per-stream
zero-forcing receiver in which sink node 𝑖 projects its received signal on to the columns, …

Limited feedback design for interference alignment on MIMO interference networks with heterogeneous path loss and spatial correlations

X Rao, L Ruan, VKN Lau - IEEE transactions on signal …, 2013 - ieeexplore.ieee.org
… As such, we shall focus on studying the limited feedback design and the associated … how
the limited feedback scheme is designed to adapt to the in the MIMO interference network. We …

Distributed real-time implementation of interference alignment with analog feedback

S Lee, A Gerstlauer, RW Heath - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
design space of trade-offs between achievable sum rates and accuracy of different alignment,
synchronization, and feedback … used for both the feedforward and feedback channels. Two …

Interference alignment under training and feedback constraints

B Xie, Y Li, H Minn, A Nosratinia - 2011 IEEE Global …, 2011 - ieeexplore.ieee.org
… , we show that interference alignment achieves higher DoF … time is large and the capacity of
feedback link is at least as Θ(log P). … beam design algorithms (such as minimum interference

Interference alignment under limited feedback for MIMO interference channels

RT Krishnamachari, MK Varanasi - IEEE Transactions on Signal …, 2013 - ieeexplore.ieee.org
… the feedback bit rate scales sufficiently fast with the signal-to-noise ratio, the transmitters can
use an interference alignment … of freedom of the interference channel attainable with perfect …

Limited feedback design for interference alignment on two-cell interfering MIMO-MAC

MJ Kim, HH Lee, YC Ko - IEEE Transactions on Vehicular …, 2014 - ieeexplore.ieee.org
… for the two-cell interfering MIMO-MAC. First, we propose a QR decomposition-based interference
alignment (QRD-IA) scheme for the efficient limited feedback by extending the result of […

Performance analysis and optimization for interference alignment over MIMO interference channels with limited feedback

X Chen, C Yuen - IEEE Transactions on Signal Processing, 2014 - ieeexplore.ieee.org
… 2) We design an adaptive feedback allocation scheme by maximizing the average … be
served as guidelines on the system design as follows: a) Limited CSI feedback results in rate loss, …