1、Wireless Mobile Communication and Transmission Lab.Dongfeng Yuanhttp:/202.194.20.8(*)Wireless ChannelsWireless Mobile Communication and Transmission Lab.OutlineCell Wireless CommunicationsPhysical Modeling for Wireless ChannelsPass Loss ModelingShadow FadingStatistical Multipath Channel ModelsCapaci
2、ty of Wireless ChannelsDate 2Wireless Mobile Communication and Transmission Lab.OutlineCell Wireless CommunicationsPhysical Modeling for Wireless ChannelsPass Loss ModelingShadow FadingStatistical Multipath Channel ModelsCapacity of Wireless ChannelsDate 3Wireless Mobile Communication and Transmissi
3、on Lab.Cell Wireless CommunicationsStructureBase StationWireless ChannelMobile Users Wireless channels operate through electromagnetic radiation from the transmitter to the receiver. Its characteristic communication efficiency (Channel Capacity) How to communicate effectively over wireless channels
4、?Date 4Wireless Mobile Communication and Transmission Lab.Cell Wireless CommunicationsSystem DesignSystem ImplementationKey Communication TechniquesWireless Channel(Capacity Limits )Fundamental bases for wireless system implementationDate 5Wireless Mobile Communication and Transmission Lab.OutlineCe
5、ll Wireless CommunicationsPhysical Modeling for Wireless ChannelsPass Loss ModelingShadow FadingStatistical Multipath Channel ModelsCapacity of Wireless ChannelsDate 6Wireless Mobile Communication and Transmission Lab.Physical Modeling for Wireless Channels Mainly in the UHF(.3-3 GHz) and SHF(3-30GH
6、z) bandspropagation characteristicssmall antenna sizeDate 7Wireless Mobile Communication and Transmission Lab.Physical Modeling for Wireless ChannelsFrequency Bands for LTEDate 8Wireless Mobile Communication and Transmission Lab.Physical Modeling for Wireless ChannelsCharacteristics for wireless frequency bandsMultipath Reflect Scatter DiffractLOS-Line of SightNLOSAWGNDate 9Wireless Mobile Communication and Transmission Lab.Physical Modeling for Wireless channels Channel varies at two spatial scalesLarge scale fadingSmall scale fadingDate 10
