Multi sub-channel parallel bit loading method for optimal power distribution in DMT system |
Title： |
| Multi sub-channel parallel bit loading method for optimal power distribution in DMT system |
|
Application Number： |
200510135477 |
Application Date： |
2005/12/31 |
Announcement Date： |
2006/07/19 |
Pub. Date： |
|
Publication Number： |
1805421 |
Announcement Number： |
|
Grant Date： |
|
Granted Pub. Date： |
|
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H04L 27/26 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Zhu Liping, Yao Yan, Zhou Shidong, Zhu Yisheng |
Key Words： |
DMT system, optimal power distribution, multi sub-channel, parallel bit, loading method |
Abstract： |
The invention belongs to a dispersed multi-audio frequency modulation system resource distribution technique, which is characterized in that: in initialization step, loading maximum speed byte on the system, according to target error code demand, sub-channel attenuation and noise interference, and limited by system maximum power density spectrum and maximum QAM constellation size; in the target speed byte distribution step, processing multiple sub-channel parallel loading on one effective byte distribution relative to initialization loading process, utilizing blind-multiple/single-byte and/or non-blind single byte parallel increase and delete to quickly retract to target byte rate according to the difference between the initialization byte rate and the target byte rate. The invention can avoid general greed loading method, while it can keep the validity of byte loading in the parallel loading process that tending to the target byte rate, and realize the byte loading in optimized power distribution, with minimum calculation and less complex. |
Claim： |
|
Priority： |
|
PCT： |
|
LegalStatus： |
|
Relevancy information
