A spreader 112 of a base station apparatus 100 spreads transmission data at a low spreading factor at which a given signal quality can be little obtained after despreading at a mobile station apparatus 101, when an error detector 137 of the mobile station apparatus 101 detects an error in despread data...http://www.google.com/patents/US6999497?utm_source=gb-gplus-sharePatent US6999497 - Data transmitting apparatus and data transmitting method
