CoopMAX: a cooperative MAC with randomized distributed space time coding for an IEEE 802.16 network

US8792367B2 · kind B2 · utility

Assignee

• Polytechnic Institute of New York University · US

Inventors

• Chun Nie · Nutley, US
• Pei Liu · Beijing, CN
• Thanasis Korakis · Brooklyn, US
• Elza Erkip · New York, US
• Shivendra S. Panwar · Freehold, US

Key dates

• Filing date: Jan 21, 2011
• Grant date: Jul 29, 2014
• Expiry date: Nov 5, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/15592
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Cooperative communication is a technique that can be employed to meet the increased throughput needs of next generation WiMAX systems. In a cooperative scenario, multiple stations can jointly emulate the antenna elements of a multi-input multi-output system in a distributed fashion. A framework for a randomized distributed space-time coding (“R-DSTC”) technique in the emerging relay-assisted WiMAX network, and the development of a cooperative medium access control (“MAC”) layer protocol, called CoopMAX, for R-DSTC deployment in an IEEE 802.16 system, is described. The technique described couples the MAC layer with the physical (PHY) layer for performance optimization. The PHY layer yields significant diversity gain, while the MAC layer achieves a substantial end-to-end throughput gain.