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US 8,054,866 B2Granted
MC-CDMA system, transmitter and receiver
AssigneeThe Doshisha
InventorsHideichi Sasaoka, Hisato Iwai, Yusuke Miyamoto
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AssigneeThe Doshisha
InventorsHideichi Sasaoka, Hisato Iwai, Yusuke Miyamoto
Estimating the term…
A MC-CDMA transmitter and an MC-CDMA receiver are provided, which use a novel orthogonal spreading code that allows an effect by a delay wave to appear in only a specific user. An MC-CDMA system includes: a transmitter which multiplies a transmitting signal by a sinusoidal signal which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, in a frequency domain to be spread and split into orthogonal sub-carriers, and multiplexes the sub-carriers; and a receiver for receiving a transmitting signal from the transmitter in a manner that a sinusoidal signal, which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, is multiplied by the transmitting signal in a frequency domain, and the resultant is inversely spread.
A multicarrier code division multiple access (MC-CDMA) system comprising:
A multicarrier code division multiple access (MC-CDMA) receiver configured to receive a transmission signal, wherein the transmission signal is generated in part by multiplying a first signal by a sinusoidal signal in a frequency domain to generate a second signal, wherein the sinusoidal signal has an amplitude of r and is orthogonal as a result that frequency periods are different among users, wherein the second signal is split into orthogonal sub-carriers which are multiplexed to generate the transmission signal, and wherein the MC-CDMA receiver is configured to de-spread the transmission signal.
A multicarrier code division multiple access (MC-CDMA) transmitter configured to multiply a first signal by a sinusoidal signal in a frequency domain to generate a second signal, wherein the sinusoidal signal has an amplitude of r and is orthogonal as a result that frequency periods are different among users, wherein the transmitter is also configured to spread and split the second signal into orthogonal sub-carriers, and to multiplex the orthogonal sub-carriers to generate a transmission signal.
Dependencies are inferred from the claim text.