RECEPTION DEVICE, TRANSMISSION DEVICE, AND COMMUNICATION SYSTEM

• Main Author: TOMIZUKA HIROSHI
• Format: Patent
• Language: English
• Published: 20.01.2011
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PROBLEM TO BE SOLVED: To provide a reception device achieving high transmission path estimation accuracy in a high-speed fading transmission environment.SOLUTION: The reception device for performing maximum likelihood sequence estimation for performing signal determination while performing transmission path estimation and path selection on a survival path based on a Viterbi algorithm includes: a current time transmission path estimation part 51 for calculating a forward transmission path estimation value estimated in the forward direction of the time axis based on a current-time reception signal being a reception signal of a signal determination processing object and a transmission path estimation value calculated in the past, and calculating a backward transmission path estimation value estimated in the backward direction of the time axis based on the current-time reception signal and a future-time transmission path estimation value; a future-time transmission path estimation part 52 for calculating a future-time transmission path estimation value based on a future-time reception signal and the forward transmission path estimation value; and a transmission path estimation value combination part 53 for calculating a combined transmission path estimation value obtained by combining the forward transmission path estimation value with the backward transmission path estimation value. Path selection and signal determination are performed using the combined transmission path estimation value.