| 摘要 |
<p>A method for achieving high bit densities in a direct sequence spread spectrum communication system by using encoded spreading codes. An encoded pseudo noise code (213) is first created. This encoded pseudo noise code (213) is then used to spread an information signal (210) by modulating the information signal (210) with the encoded pseudo noise code (213). The same encoded pseudo noise code (213) is also used to demodulate the signal. The encoded pseudo noise code (213) is created by inverting one bit of a pseudonoise code (211) where the inverted bit corresponds to the value of the information signal.</p> |
