• Publications
  • Influence
Fundamentals of Wireless Communication
TLDR
This paper presents a meta-modelling architecture for multiuser communication based on the MIMO model, which combines spatial multiplexing, channel modeling, and diversity-multiplexing techniques. Expand
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
TLDR
Using distributed antennas, this work develops and analyzes low-complexity cooperative diversity protocols that combat fading induced by multipath propagation in wireless networks and develops performance characterizations in terms of outage events and associated outage probabilities, which measure robustness of the transmissions to fading. Expand
Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels
TLDR
A simple characterization of the optimal tradeoff curve is given and used to evaluate the performance of existing multiple antenna schemes for the richly scattered Rayleigh-fading channel. Expand
Opportunistic beamforming using dumb antennas
TLDR
This work shows that true beamforming gains can be achieved when there are sufficient users, even though very limited channel feedback is needed, and proposes the use of multiple transmit antennas to induce large and fast channel fluctuations so that multiuser diversity can still be exploited. Expand
Gaussian Interference Channel Capacity to Within One Bit
TLDR
This work shows that the existing outer bounds can in fact be arbitrarily loose in some parameter ranges, and by deriving new outer bounds, it is shown that a very simple and explicit Han-Kobayashi type scheme can achieve to within a single bit per second per hertz of the capacity for all values of the channel parameters. Expand
Mobility increases the capacity of ad-hoc wireless networks
TLDR
The per-session throughput for applications with loose delay constraints, such that the topology changes over the time-scale of packet delivery, can be increased dramatically when the nodes are mobile rather than fixed, by exploiting node mobility as a type of multiuser diversity. Expand
Completely Stale Transmitter Channel State Information is Still Very Useful
TLDR
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. Expand
Mobility increases the capacity of ad hoc wireless networks
TLDR
The per-session throughput for applications with loose delay constraints, such that the topology changes over the time-scale of packet delivery, can be increased dramatically under this assumption, and a form of multiuser diversity via packet relaying is exploited. Expand
Communication on the Grassmann manifold: A geometric approach to the noncoherent multiple-antenna channel
  • L. Zheng, David Tse
  • Mathematics, Computer Science
  • IEEE Trans. Inf. Theory
  • 1 February 2002
TLDR
The capacity of multiple-antenna fading channels is studied using a noncoherent block fading model proposed by Marzetta and Hochwald and has a geometric interpretation as sphere packing in the Grassmann manifold. Expand
Wireless Network Information Flow: A Deterministic Approach
TLDR
An exact characterization of the capacity of a network with nodes connected by deterministic channels is obtained, a natural generalization of the celebrated max-flow min-cut theorem for wired networks. Expand
...
1
2
3
4
5
...