SYMBOL DETERMINATION DEVICE OF INPUT SIGNAL, METHOD, AND PROGRAM

• Main Authors: AKIYAMA SHIZUO, OGATA MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 01.03.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

To allow a simple symbol determination with high accuracy even to an imbalance input signal in a radio communication.SOLUTION: A symbol determination device for performing a symbol determination of an input signal, comprises: a primary symbol determination part that performs first symbol determination processing for generating a first symbol determination result obtained by classifying each input signal into any on of symbols; and a secondary symbol determination part that performs a symbol determination of the input signal on the basis of the first symbol determination result. The secondary symbol determination part comprises: a distribution information generation part that generates distribution information by using the input signal and the first symbol determination result; and a distribution information determination part that performs the symbol determination of the input signal by performing second symbol determination processing to be corrected by using clustering processing in accordance with the first symbol determination result by using the distribution information.SELECTED DRAWING: Figure 1 【課題】 無線通信における不均衡な受信信号に対しても、簡易的かつ高い精度でのシンボル判定を可能とすること。【解決手段】 実施形態によれば、受信信号のシンボル判定を行うためのシンボル判定装置は、受信信号のおのおのを、いずれかのシンボルに分類した第１のシンボル判定結果を作成する第１のシンボル判定処理を行う一次シンボル判定部と、第１のシンボル判定結果に基づいて、受信信号のシンボル判定を行う二次シンボル判定部とを具備する。二次シンボル判定部は、受信信号と前記第１のシンボル判定結果とを用いて分布情報を作成する分布情報作成部と、分布情報を用いて、第１のシンボル判定結果を必要に応じてクラスタリング処理を用いて修正する第２のシンボル判定処理を行うことによって、受信信号のシンボル判定を行う分布情報判定部とを備える。【選択図】図１