发明名称 |
Method of determining a channel quality and modem |
摘要 |
The present invention is concerned with an Orthogonal Frequency Division Multiplex (OFDM) data transmission over a transmission channel that is subject to narrowband interferers. An increased overall bit or data transmission rate is achieved by a method of determining a channel capacity of a plurality of sub-channels of the transmission channel based on a net background noise power estimation. The net background noise power comprises only white noise-like contributions and excludes; to a reasonable extent; noise contributions or signal power from narrowband interferers. Hence, the net background noise power is reduced as compared to the conventional case of a background noise power estimated for the totality of sub-channels or a continuous transmission band. Based on this, an OFDM signal code construction or bit allocation scheme is chosen that provides for optimized data transmission at a data rate that approximates or approaches the more realistic channel capacity of the individual sub-channel, resulting in an increased overall bit or data transmission rate.
|
申请公布号 |
EP1940035(A1) |
申请公布日期 |
2008.07.02 |
申请号 |
EP20060405543 |
申请日期 |
2006.12.27 |
申请人 |
ABB TECHNOLOGY AG |
发明人 |
KOROBKOV, DMITRI;LANGFELD, PATRICK;BENNINGER, HANS |
分类号 |
H04B1/10;H04B3/54;H04B17/00;H04L27/26 |
主分类号 |
H04B1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|