A communication system that includes a mobile device configured to dock with an external dock. The mobile device can include a docking interface and a transceiver having one or more antennas. The docking interface can establish a connection with the external dock. The external dock can include one or more antennas that are configured to connect to transceiver via the docking interface when the mobile device is connected to the external dock. The antenna(s) of the mobile device and the antenna(s) of the external dock can cooperatively communicate with one or more communication environments. The antenna(s) of the mobile device and the antenna(s) of the external dock can be configured as a Multiple-input Multiple-output (MIMO) antenna system.