| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in the conventional digital radio communication system, which effectively utilizes a method by which an array antenna separates and suppresses a multiplex wave and an interference wave depending on the difference from the arrival directions, that has required a large scale of an arithmetic unit to calculate a complex weight vector of the array antenna, requiring a high calculation quantity and an increased power consumption required for the arithmetic operation, in the case of adopting the array antenna for a mobile station whose lower power consumption is a requirement. SOLUTION: The digital radio communication system is configured, such that the array antenna of the mobile station receives a reference signal sent from a base station and a waveform memory stores a complex base band signal of a wireless signal received by each antenna element. The mobile station transmits each of the stored complex base band signals to the base station as transmission data, and the base station side calculates the complex weight vectors of the mobile station array antenna and transmits the calculated complex weight vector to the mobile station as transmission data. |
