An antenna configuration is described for high frequency or very high frequency radars contained in a single vertical post. Messages transmitted periodically with a certain interval from each sub-ECU to the main ECU and received by the main ECU in a monitoring interval are counted to obtain the number of message receipts. The electric motor element in turn includes a first and a second electric motor disposed parallel to each other on opposite sides of the thrust member. The photo detecting device is connected between the switch line and the drain electrode of the switch TFT for detecting the brightness of a light incident thereon. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors. The feed forward phase tracking unit can include a sampling phase generation unit, an oversampling unit, a serial-to-parallel-conversion unit, a binary phase detection unit, a loop filter, a finite state machine, a binary rotator, and a data recognition unit for recovery of the received data stream which includes a number of parallel data recognition FIR-Filters.