Proceedings ArticleDOI
On fading broadcast channels with partial channel state information at the transmitter
Ravi Tandon,Mohammad Ali Maddah-Ali,Antonia M. Tulino,H. Vincent Poor,Shlomo Shamai +4 more
- pp 1004-1008
TLDR
The scheme illustrates the joint utilization of current and past knowledge of the channel state information at the transmitter, and the degrees of freedom (DoF) region of the two-user - MIMO broadcast channel under this model is completely characterized.Abstract:
The two user multiple-input multiple-output (MIMO) broadcast channel is studied in which the channel from one of the receivers is known instantaneously and perfectly at the transmitter, whereas the channel from the other receiver is known in a delayed manner. The degrees of freedom (DoF) region of the two-user (M; N 1 ; N 2 ) - MIMO broadcast channel under this model is completely characterized. The scheme illustrates the joint utilization of current and past knowledge of the channel state information at the transmitter.read more
Citations
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Journal ArticleDOI
The Degrees of Freedom Region of Temporally Correlated MIMO Networks With Delayed CSIT
TL;DR: A simple unified framework is proposed, allowing us to attain optimal DoF region for the general antenna configurations and current CSIT qualities, optimally combining the use of both outdated and instantaneous CSIT.
Journal ArticleDOI
Secure Degrees of Freedom Region of the Two-User MISO Broadcast Channel With Alternating CSIT
TL;DR: The secure degrees of freedom (s.o.f) region of the MISO BCCM with alternating CSIT with the symmetry assumption was established in this paper, where the authors showed the synergistic benefits of inter-state coding for secrecy.
Posted Content
On the Fundamental Feedback-vs-Performance Tradeoff over the MISO-BC with Imperfect and Delayed CSIT
TL;DR: In this paper, the authors considered the multiuser multiple-input single-output (MISO) broadcast channel (BC) with imperfect channel state information at the transmitter (CSIT) and established bounds on the tradeoff between degrees-of-freedom (DoF) performance and CSIT feedback quality.
Proceedings ArticleDOI
On the fundamental feedback-vs-performance tradeoff over the MISO-BC with imperfect and delayed CSIT
TL;DR: This work provides a novel DoF region outer bound for the general K-user M ×1 MISO BC with partial current CSIT, and characterizes the minimum CSIT feedback that is necessary for any point of the sum DoF, which is optimal for the case with M ≥ K, and the cases with M = 2, K = 3.
Posted Content
On the DoF Region of the K-user MISO Broadcast Channel with Hybrid CSIT.
TL;DR: An outer bound for the degrees of freedom (DoF) region of the K-user multiple-input single-output (MISO) broadcast channel (BC) is developed under the hybrid channel state information at transmitter (CSIT) model.
References
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Journal ArticleDOI
On the achievable throughput of a multiantenna Gaussian broadcast channel
Giuseppe Caire,Shlomo Shamai +1 more
TL;DR: Under certain mild conditions, this scheme is found to be throughput-wise asymptotically optimal for both high and low signal-to-noise ratio (SNR), and some numerical results are provided for the ergodic throughput of the simplified zero-forcing scheme in independent Rayleigh fading.
Journal ArticleDOI
Completely Stale Transmitter Channel State Information is Still Very Useful
TL;DR: In this paper, the authors show that in an MIMO broadcast channel with transmit antennas and receivers each with 1 receive antenna, K/1+1/2+···+ 1/K (>;1) degrees of freedom is achievable even when the fed back channel state is completely independent of the current channel state.
Posted Content
Completely Stale Transmitter Channel State Information is Still Very Useful
TL;DR: This paper shows that in an MIMO broadcast channel with transmit antennas and receivers each with 1 receive antenna, K/1/2+···+1/K (>;1) degrees of freedom is achievable even when the fed back channel state is completely independent of the current channel state.
Journal ArticleDOI
Degrees of Freedom of Time Correlated MISO Broadcast Channel With Delayed CSIT
TL;DR: This work describes the optimal degrees of freedom region for this more general two-user MISO broadcast correlated channel where the transmitter has imperfect knowledge of the current channel state, in addition to delayed channel state information.