Simultaneous Transmission and Reception for Improvedwireless Network Performance

Authors:
D. W. Bliss;P. A. Parker;A. R. Margetts
Affiliations:
MIT Lincoln Laboratory, Lexington, MA 02420;MIT Lincoln Laboratory, Lexington, MA 02420;MIT Lincoln Laboratory, Lexington, MA 02420
Venue:
SSP '07 Proceedings of the 2007 IEEE/SP 14th Workshop on Statistical Signal Processing
Year:
2007

Citing 0
Cited 6

Improving efficiency of resource usage in two-hop full duplex relay systems based on resource sharing and interference cancellation

IEEE Transactions on Wireless Communications
Catching resource-devouring worms in next-generation wireless relay systems: two-way relay and full-duplex relay

IEEE Communications Magazine
Spatial loop interference suppression in full-duplex MIMO relays

Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Practical, real-time, full duplex wireless

MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
Poster: Single channel, full-duplex wireless

Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
Full duplex radios

Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM

Quantified Score

Hi-index	0.00

Visualization

Abstract

One of the limiting factors in ad hoc wireless mesh networks using traditional physical layer techniques is the inability to transmit and receive at the same frequency simultaneously. As a consequence, careful time-slot or frequency-reuse planning is required. This has adverse network data-rate and latency implications. The focus of this paper is a demonstration of signal processing techniques that enable simultaneous transmission and reception. These techniques employ informed-transmittermultiple-input multiple-output (MIMO) links. A combination of adaptive transmit and receive antenna array approaches is exploited. A number of important types of networking limitations can be resolved given simultaneous transmit and receive technology. The first example is the simultaneous link problem. By employing transmit and receive spatial adaptivity, two links can operate in close proximity using the same frequency at the same time. Another example is the full duplex relay node. Using the same frequency for both links, a given node can simultaneously receive packets from one node while forwarding them to another. For practical systems, two issues dominate performance: channel estimation error, often caused by stale estimates of the channel at the transmitter, and dynamic range limitations of the transmitter and receiver. These issues are investigated. Theoretical, simulated, and experimental results are presented.