摘要:
A key authentication method between a user equipment (UE) and a serving network (SN) for binary CDMA network and a key re-authentication method during which the UE performs a handover within the same SN in binary CDMA network are provided. The key authentication method for the user equipment includes receiving a terminal authentication request message from a wireless access point, transmitting a terminal authentication response message that includes identification information for the user terminal, receiving user authentication request message that includes at least two random numbers and code information for message authentication from the wireless access point, and transmitting a user authentication response message that comprises first information that is generated using a master key.
摘要:
A transmitter using pseudo-orthogonal code includes a serial-to-parallel converter for converting serial transmission data into 9-bit parallel data, and a pseudo-orthogonal code memory for receiving the parallel data from the serial-to-parallel converter and outputting 16-bit pseudo-orthogonal code by using the received data as addresses. The pseudo-orthogonal code memory has the relationship of the input address and output code, as expressed in the following equation: c(i)=0.5×((−1)b2⊕(i1b1)⊕(i0b0) (−1)b5⊕i2⊕(i1b4)⊕(i0b3) (−1)b8⊕i3⊕(i1b7)⊕(i0b6) (−1)( b2⊕b5⊕b8)⊕i3⊕i2⊕(i1(b1⊕b4⊕b7))⊕(i0(b0⊕b3⊕b6))) where C(i) is a pseudo-orthogonal code value, i is each bit of the pseudo-orthogonal code, 0≦i≦15, and b0-b8 are a transmission data bit stream input in the memory as addresses. Accordingly, the transmission efficiency of the transmitter/receiver using orthogonal code can be remarkably improved.
摘要:
A transmitter using pseudo-orthogonal code includes a serial-to-parallel converter for converting serial transmission data into 9-bit parallel data, and a pseudo-orthogonal code memory for receiving the parallel data from the serial-to-parallel converter and outputting 16-bit pseudo-orthogonal code by using the received data as addresses. The pseudo-orthogonal code memory has the relationship of the input address and output code, as expressed in the following equation: c(i)=0.5×((−1)b2⊕(i1b1)⊕(i0b0) (−1)b5⊕i2⊕(i1b4)⊕(i0b3) (−1)b8⊕i3⊕(i1b7)⊕(i0b6) (−1) ( b2⊕b5⊕b8)⊕i3⊕i2⊕(i1(b1⊕b4⊕b7))⊕(i0(b0⊕b3⊕b6))) where C(i) is a pseudo-orthogonal code value, i is each bit of the pseudo-orthogonal code, 0≦i≦15, and b0-b8 are a transmission data bit stream input in the memory as addresses. Accordingly, the transmission efficiency of the transmitter/receiver using orthogonal code can be remarkably improved.
摘要:
Disclosed is a demodulation method for enhancing decoding performance of information bits in a constant-amplitude multi-code biorthogonal modulation communication system, which performs encoding to cause the level of a transmission symbol to be constant.