Spread spectrum receiving apparatus

A receiving apparatus for receiving a multi-code spread spectrum signal, said receiving apparatus comprising:

• conversion means for converting a received signal into two base-band signals having different phases;
• detection means for detecting a spread code included in the received signal;
• and
• discrimination means for discriminating received data items, the number of which is the same as that of a plurality of spread codes, on the basis of the plurality of spread codes and the two base band signals in synchronization with a detection performed by said detection means.

A receiving apparatus for receiving a multi-code spread spectrum signal, said receiving apparatus comprising:

• conversion means for converting a received signal into a base-band signal;
• detection means for detecting a spread code included in the received signal;
• and
• despreading means for despreading the base-band signal on the basis of a plurality of spread codes in synchronization with a detection performed by said detection means,
• wherein said conversion means converts the received signal into the base-band signal before the base-band signal is despread.

A receiving apparatus for receiving, from a transmitter, a multi-code spread base-band signal, said receiving apparatus comprising:

• receiving means for receiving a base-band signal from the transmitter;
• detection means for detecting a spread code included in the received base-band signal;
• and
• demodulation means for demodulating the received base-band signal on the basis of a plurality of spread codes in synchronization with a detection performed by said detection means.

A method of receiving a multi-code spread spectrum signal, said method comprising the steps of:

• converting a received signal into a base-band signal;
• detecting a spread code included in the received signal;
• and
• demodulating the received signal on the basis of a plurality of spread codes in synchronization with a detection performed in said detecting step,
• wherein the spread code is detected from the base-band signal, and the received signal which is converted into said base-band signal being demodulated in accordance with the plurality of spread codes.

A receiving method for receiving a multi-code spread spectrum signal, said method comprising the steps of:

• converting a received signal into a base-band signal;
• detecting a spread code included in the base-band signal;
• and
• demodulating the base-band signal in accordance with a plurality of spread codes in synchronization with a detection performed by said detection step.