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原文传递 TECHNICAL EVALUATION OF THE 2.45 AND 5.8 GHZ ISM BANDS FOR INTELLIGENT VEHICLE HIGHWAY SYSTEMS.

题名：	TECHNICAL EVALUATION OF THE 2.45 AND 5.8 GHZ ISM BANDS FOR INTELLIGENT VEHICLE HIGHWAY SYSTEMS.
作者：	Spaulding-A-D
关键词：	Automated-toll-collection; Interference-; Transmissions-
摘要：	IVHS Electronic Toll and Traffic Management (ETTM) Systems will involve very large numbers of electronic equipment in vehicles and along the roadside. These systems and others will be used for communication, toll collection, traffic management, vehicle location traveler information, and many other uses. Many current ETTM systems operate in the 902-928 MHZ band. This band is currently becoming crowded, and many compatibility problems with existing systems are arising. Other frequencies, up to around 6 GHz, need to be considered for the additional oncoming ETTM and related systems. The 5.8 GHz ISM band (5800 + 75 MHZ) appears to be a desirable alternative since currently it is little used, and not widely used geographically. Also the European Common Market is proposing to operate their ETTM systems in this ISM band. The 2.45 GHz ISM band (2450 + 50 MHZ) may also be a suitable band. It is the purpose of this report to investigate the suitability of these ISM bands for ETTM and related systems. We start in the next section by looking at the natural and incidental radiation devices in these bands. It is the combination of all these radiations natural, incidental and intentional, that combine to form the interference environment in which the new (e.g., ETTM) systems must operate.
总页数：	1995.
报告类型：	科技报告