Abstract: This drive control apparatus, includes: a traveling speed detection portion that detects a traveling speed of an own vehicle; an object detection portion that detects an object around an own vehicle and obtains an object detection result; a time-to-collision calculation portion that calculates time to when the object and the own vehicle collide against each other based on the traveling speed and the object detection result; and an alarm portion that raises an alarm to a driver based on the time to collision, in which the alarm portion: obtains reference alarm start time that is preset as a reference value for starting the alarm, and a predetermined distance that is preset as a minimum value of an error in distance perception of the driver; adds time obtained by dividing the predetermined distance by the traveling speed and raises the alarm to the driver.

Abstract: This drive control apparatus, includes: a traveling speed detection portion that detects a traveling speed of an own vehicle; an object detection portion that detects an object around an own vehicle and obtains an object detection result; a time-to-collision calculation portion that calculates time to when the object and the own vehicle collide against each other based on the traveling speed and the object detection result; and an alarm portion that raises an alarm to a driver based on the time to collision, in which the alarm portion: obtains reference alarm start time that is preset as a reference value for starting the alarm, and a predetermined distance that is preset as a minimum value of an error in distance perception of the driver; adds time obtained by dividing the predetermined distance by the traveling speed and raises the alarm to the driver.

Abstract: In a radio communication method such as W-CDMA, additive information of each current frame transmitted and received between a group of base stations 2, 4 and 6 and a mobile station 8 is added to a preceding frame precedent to the current frame by one frame and is sent before the current frame. On a receiving end, demodulation characteristics for the current frame corresponding to the additive information, which is added to the preceding frame and is sent before the current frame, is controlled and adjusted in advance according to the additive information, the current frame sent at a next time is demodulated according to the demodulation characteristics controlled and adjusted, and communication quality of frames transmitted and received between the group of base stations 2, 4 and 6 and the mobile station 8 is improved.

Abstract: In a radio communication method such as W-CDMA, additive information of each current frame transmitted and received between a group of base stations 2, 4 and 6 and a mobile station 8 is added to a preceding frame precedent to the current frame by one frame and is sent before the current frame. On a receiving end, demodulation characteristics for the current frame corresponding to the additive information, which is added to the preceding frame and is sent before the current frame, is controlled and adjusted in advance according to the additive information, the current frame sent at a next time is demodulated according to the demodulation characteristics controlled and adjusted, and communication quality of frames transmitted and received between the group of base stations 2, 4 and 6 and the mobile station 8 is improved.

Abstract: The demodulator demodulates received data, the Viterbi decoder decodes the received data to a bit sequence with the Viterbi algorithm according to the soft-decision estimate generated in demodulation and at the same time appends a reliability to each bit in the bit sequence. Then, a CRC circuit determines whether any error is detected or not by executing CRC on the decoded bit sequences, and, if no error is detected, the bit sequence is output as decoded data. On the other hand, if any error is detected, bit inversion is executed in the ascending order of sums of reliability for bits to be inverted until no error is detected by the CRC circuit. For this reason, the case of error detection is decreased and the work load for computing is decreased.