Candidate list generation and interference cancellation framework for MIMO detection

US7957484B2 · kind B2 · utility

Assignee

• TEXAS INSTRUMENTS INCORPORATED · US

Inventors

• Deric Wayne Waters · Dallas, US
• Naftali Sommer · Nesher, IL
• Anuj Batra · Dallas, US
• Srinath Hosur · Plano, US
• Doron Burshtein · Or Yehuda, IL
• Rafi Dalla Torre · Givatayim, IL
• Oren PELES · Rehovot, IL
• Daniel Wajcer · Even Yehuda, IL

Key dates

• Filing date: Oct 31, 2007
• Grant date: Jun 7, 2011
• Expiry date: Apr 6, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2025/03426
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method and system for performing Multiple-Input Multiple-Output (“MIMO”) detection that reduces complexity by decomposing MIMO detection problem into two less complex problems, Candidate List generation and Interference Cancellation (“CLIC”). Embodiments of the CLIC framework parse an N element channel output into a first set containing S elements and a second set containing N−S elements. A first list of candidate vectors is generated from the first set of elements. A set of interference cancelled elements is generated by using the first list of candidate vectors to cancel interference from the second set of elements. A second list of candidate vectors is generated from the set of interference cancelled elements. A minimum cost is computed for each bit of the candidate vectors and from the costs a log-likelihood ratio is computed.