Weighting strategy in the state space problem for DS-CDMA code acquisition (日韓合同ワークショップ 1st Korea-Japan Joint Workshop on Ubiquitous Computing and Networking Systems (ubiCNS 2005))

概要

論文の詳細を見る
We present a formulation of state-space problem of which solution is directed by redundant reasoning control method for semi-heuristic and lightweight DS-CDMA code acquisition. The reasoning of the state-space problem provides us with the way to find a K bit synchronized sequence among K dephased sequences with less calculation cost compared with serial search and matched filter. In this process, redundancy-restriction method called weighting strategy enhances the searching ability of FOL (First order logic) reasoning for the faster and lightweight code acquisition. The combination of weighting strategy and correlator enables us to achieve the peak-detection within K/3 times of calculating inner products and its measurement. Our system is evaluated by the reduced cost of proving state-space problem using weighting strategy and its robustness of using the proposal code acquisition framework. Experiment shows that the proposal method is robust if K/N sequences are grouped with N ranging 3 from 5.
一般社団法人情報処理学会の論文
2005-06-09