| 摘要 |
<p>A grouping time, space, frequency multiaddress coding method for using the low correlation random variables or constants such as time, space and frequency etc as the coding elements, includes following steps to accomplish the coding: selecting basic perfect complementary orthogonal code pairs mate; selecting basic time, space, frequency codes expanding matrix; constructing basic perfect complementary orthogonal code pair group mate; spreading the code length and the code number in the basic perfect complementary orthogonal code pair group mate according to the spanning tree method; transforming the spanning tree. The invention make the CDMA or other communication systems using this address codes have higher frequency spectrum efficiency and larger capacity, and at the same time have stronger antifading ability, that is higher implied diversity multiplicity and higher transmission reliability, lower receiving threshold SNR, so that it need smaller transmitting power to accomplish higher reliability and higher transmission rate of the project's real requirements.</p> |
