Patent ID: 7693140
Filing Date: 2010-04-06
Classification: H04B,H04L

Abstract:
1. A transmitting apparatus comprising: a data forming section that forms first data and second data from data addressed to one of a plurality of receiving apparatuses, the receiving apparatuses being different apparatuses from the transmitting apparatus; a spreading method setting section that sets (a) a first parameter used for spreading the first data and (b) a second parameter used for spreading the second data independently from each other, when (i) the spread first signal, which is generated by performing spectrum spreading on the first data, is to be transmitted from a first antenna to the one receiving apparatus, (ii) the spread second signal, which is generated by performing spectrum spreading on the second data, is to be transmitted from a second antenna to the one receiving apparatus, and (iii) the first antenna and the second antenna are different from each other; a first spreading section that generates the spread first signal by performing the spectrum spreading on the first data using the first parameter; a second spreading section that generates the spread second signal by the performing spectrum spreading on the second data using the second parameter; a first transmitting section that transmits a first code multiplexed signal from the first antenna to the one receiving apparatus, the first code multiplexed signal being generated by multiplexing the spread first signal and another signal; and a second transmitting section that transmits a second code multiplexed signal from the second antenna to the one receiving apparatus, the second code multiplexed signal being generated by multiplexing the spread second signal and another signal; wherein: the first parameter is one of: (x) a spreading factor of the spectrum spreading, (y) how many signals are to be multiplexed to generate the first code multiplexed signal, and (z) how many spreading codes are to be assigned to the each of the receiving apparatuses; the second parameter is one of: (s) a spreading factor of the spectrum spreading, (t) how many signals are to be multiplexed to generate the second code multiplexed signal, and (u) how many spreading codes are to be assigned to each of the receiving apparatuses.