|
FURTURE RESEARCH TASKS INCLUDE:
| • |
Analysis
of the real performance of the distributed
link adaptation and stream control methods,
and the throughput of the proposed network
model with interfering MIMO links in different
network settings and real propagation environments. |
| • |
Analysis
of the effects of channel conditions and MIMO
interference on the link capacity. Effect of
scattering environment, presence of a line
of sight, spatial seperability of desired and
interfering streams on the capacity will be
examined. |
| • |
Evaluation
of the real performance of the distributed
link adaptation and stream control algorithms
will be evaluated, taking into account the
overhead of CSI updates, the link adaptation,
and the perturbations in the network load.
Various learning opportunities will be investigated
to reduce the channel feedback overhead. |
| • |
Investigation of interference cancellation methods, and error propagation effects among link layers, and their impact on improving the network performance. |
| • |
Alternative
joint link optimization algorithms to achieve
higher levels of network throughput and to
utilize practical parameters such as bit error
rate (BER). |
DELIVERABLES:
Deliverables will include detailed publication of the simulation results, results of experimental validation of some of the simulation findings, and results from testing of some of the developed algorithms in typical indoor wireless communications environments.
REFERENCES:
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M. J. Gans, “On
limits of wireless communications in a fading environment
when using multiple antennas,” Wireless
Personal Comm., vol. 6, 1998. |
| [2] E. Telatar, “Capacity of
multi-antenna gaussian channels,” Technical
Report, AT&T Bell Labs, June 1995. |
| [3] G. G. Raleigh,
J. M. Cioffi, “Spatio-temporal
coding for wireless communication,” IEEE
Trans. on Comm., vol. 46, Mar. 1998. |
| [4] L. Dai, S. Zhou,
H. Zhuang, and Y. Yao, “Closed-loop MIMO architecture based
on water-filling,” Electronics Letters, vol.
38 , no. 25, pp. 1718-20, Dec. 2002. |
| [5] M. F. Demirkol
and M. A. Ingram, “Distributed
control and optimization of interfering MIMO links,” submitted
to IEEE Transactions on Wireless Communications in May 2003. |
| [6]
M. F. Demirkol and M. A. Ingram, “Power-controlled
capacity for interfering MIMO links,” Proc.
of the IEEE Vehicular Technology Conference,
vol. 1, pp. 187-191, Oct. 2001. |
| [7]
M. F. Demirkol and M. A. Ingram, “Control
using capacity constraints for interfering MIMO
links,” Proc. of the Int. Symp. on
Personal, Indoor and Mobile Radio Comm., vol. 3, pp. 1032-36,
Sep. 2002. |
| [8]
M. F. Demirkol and M. A. Ingram, “Stream
control in networks with interfering MIMO links,” Proc.
of the IEEE Wireless Communications and Networking
Conference, Mar. 2003. |
| [9]
J.-S. Jiang, M. F. Demirkol, M. A. Ingram, “Measured
capacities at 5.8 GHz of indoor MIMO systems
with MIMO interference,” Proc. of the
IEEE Vehicular Technology Conference, Oct. 2003. |
| [10]
M. F. Demirkol, M. A. Ingram, and Z Yun, “Feasibility
of Closed Loop Operation for MIMO Links with
MIMO Interference,” submitted to the
IEEE International Symposium on Antennas and
Propagation,
June 2003. |
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