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Cooperative Spatial Multiplexing for Wireless Applications
Category(s):
For Information, Contact:
Jay Bjerke
Commercialization Manager, Engineering
515-294-4740
licensing@iastate.edu
Web Published:
5/8/2015
ISURF #
3139
Summary:
ISU researchers have developed a cooperative spatial multiplexing strategy that requires only a single antenna

Development Stage:

Description:
Wireless communication environments are increasingly resource-constrained, with a limited and highly regulated spectrum. In addition, the practicality of the wireless terminal is constrained by a finite energy supply and space limitations. To address these problems, ISU researchers have developed a cooperative spatial multiplexing strategy that requires only a single antenna by creating a virtual antenna array from a collection of antennas belonging to other terminals. Each relay node in the virtual antenna array detects only a fraction of the source data stream; all the sub-streams are then simultaneously forwarded over the same physical channel. Multiple receive antennas or Rake fingers at the destination then allow the sub-streams to be separately detected based on their spatial characteristics or spreading codes.Unlike other spatial multiplexing techniques that require multiple antennas at both the transmitter and receiver, creating a bulky and heavy wireless terminal, cooperative spatial multiplexing requires only one antenna, making the wireless terminal small and light. Cooperative spatial multiplexing also reduces the transmit and receive requirements on each relay node by shifting the transmission burden to the destination terminal. This makes cooperative spatial multiplexing especially useful for high data rate transmissions.
Advantage:
• Requires only one antenna
• Wireless terminal is small and lightweight
• Application in high data rate transmissions
Application:
Wireless data communications

Patent Information:
*To see the full version of the patent(s), follow the link below, then click on "Images" button.
Country Serial No. Patent No. Issued Date
United States 11/405,858 8,345,693* 1/1/2013


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