资讯

IEEE5 小时
Derivation of antenna pattern shaping criteria for urban base stations using ray tracing ...
A novel method for the derivation of the optimum base station (BS) antenna radiation pattern in urban microcellular systems or wireless systems in general is presented. The multipath radio channel is ...
archive6 天
A manual of gothic stone carving: forming no I of a series of manuals of gothic ornament ...
Addeddate 2015-04-09 13:18:35.663075 Barcode 56156 Camera Canon EOS 5D Mark II Foldoutcount 0 Identifier ...
Canada28 天
COVID-19 rapid testing and screening in workplaces: Get rapid tests
Businesses and non-profit organizations (NPO) may be eligible to receive free COVID-19 rapid tests from provincial or territorial governments. Indigenous communities and organizations If rapid tests ...