An Overview of the U.S. and Japanese Approaches to Cognitive Radio and SDR

James MILLER  

IEICE TRANSACTIONS on Communications   Vol.E89-B   No.12   pp.3168-3173
Publication Date: 2006/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.12.3168
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Software Defined Radio Technology and Its Applications)
software defined radio,  cognitive radio,  spectrum regulation,  spectrum policy,  

Full Text: FreePDF

"Cognitive radio" and "software-defined radio" (SDR) are today an important consideration in major spectrum debates in the United States. The U.S. drafted its first SDR rules in 2001, and since has continued efforts to resolve potential regulatory concerns and facilitate the benefits of the technology. At the same time, Japan has had a very rich experience in the lab with SDR, with significant achievements on many engineering topics. However, the regulatory state of SDR in Japan has not kept pace with the United States. Likewise cognitive radio, while a topic of inquiry, betrays a different focus. The paper explores why the paths for these technologies have diverged in the U.S. and Japan.