| 摘要 |
<p>The invention relates to a method and an arrangement for transmitting a digital signal consisting of symbols, the arrangement comprising a coder at the transmission end for coding complex symbols to channel symbols in blocks of given length, wherein the coding is defined by a code matrix comprising an orthogonal block code, and a transmitter for transmitting the channel symbols via several different channels and two or more antennas. The arrangement is configured to include information in redundant directions of the orthogonal code such that a code rate is higher than what is allowed by orthogonality.</p> |
