Data transmitting apparatus and data transmitting method

Details Data transmitting apparatus and data transmitting method Data transmitting apparatus and data transmitting method

2006-02-14

2006-02-14

Tran, Khai (Department: 2637)

Pulse or digital communications

Spread spectrum

C375S219000, C375S295000

Reexamination Certificate

active

06999497

ABSTRACT:
A spreader112of a base station apparatus100spreads transmission data at a low spreading factor at which a given signal quality can be little obtained after despreading at a mobile station apparatus101, when an error detector137of the mobile station apparatus101detects an error in despread data of received data, a data retransmission request is performed to the base station apparatus100and despread data is held by a despreader/combiner136. After that, the mobile station apparatus101repeats processing for combining the held data with the retransmitted data subjected to despreading until the time when an error-undetected state comes. This makes it possible to increase transmission efficiency, suppress transmission power extremely, and improve diversity performance to transmit data from a plurality of antennas.

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