公开(公告)号：US20080310546A1

公开(公告)日：2008-12-18

申请号：US12067486

申请日：2006-10-23

Applicant: Leslie D Humphrey ,  Andrew D Wallace

Inventor： Leslie D Humphrey ,  Andrew D Wallace

IPC: H04L25/03

CPC classification number: H04L1/0009 ,  H04L1/0054 ,  H04L1/0071 ,  H04L1/201 ,  H04L1/206 ,  H04L27/2602

Abstract: Following a transmission comprising a plurality of symbols, an error measurement is generated for each symbol, so that one may distinguish between symbols having a relatively low error and symbols having a relatively high error. A bit rate to be used for subsequent transmission is determined as a function of error measurements of those symbols that have relatively low error and as a function also of the proportion of symbols having a relatively high error, such that the bit rate reduces as the proportion increases. Measurement of the error rate and/or the durations of high and low error conditions may also be used to set other transmission parameters such as error-correcting code and interleaver settings.

Abstract translation: 在包括多个符号的传输之后，对每个符号产生误差测量，使得可以区分具有相对低的误差的符号和具有相对高的误差的符号。 用于后续发送的比特率被确定为具有相对低的误差的那些符号的误差测量的函数，并且还具有具有相对高的误差的符号的比例的函数，使得比特率随着比例而降低 增加 错误率和/或高和低误差条件的持续时间的测量也可以用于设置其他传输参数，例如纠错码和交织器设置。

公开(公告)号：US08442149B2

公开(公告)日：2013-05-14

申请号：US12067486

申请日：2006-10-23

Applicant: Leslie D Humphrey ,  Andrew D Wallace

Inventor： Leslie D Humphrey ,  Andrew D Wallace

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC classification number: H04L1/0009 ,  H04L1/0054 ,  H04L1/0071 ,  H04L1/201 ,  H04L1/206 ,  H04L27/2602

Abstract: Following a transmission comprising a plurality of symbols, an error measurement is generated for each symbol, so that one may distinguish between symbols having a relatively low error and symbols having a relatively high error. A bit rate to be used for subsequent transmission is determined as a function of error measurements of those symbols that have relatively low error and as a function also of the proportion of symbols having a relatively high error, such that the bit rate reduces as the proportion increases. Measurement of the error rate and/or the durations of high and low error conditions may also be used to set other transmission parameters such as error-correcting code and interleaver settings.

Abstract translation: 在包括多个符号的传输之后，对每个符号产生误差测量，使得可以区分具有相对低的误差的符号和具有相对高的误差的符号。 用于后续发送的比特率被确定为具有相对低的误差的那些符号的误差测量的函数，并且还具有具有相对高的误差的符号的比例的函数，使得比特率随着比例而降低 增加 错误率和/或高和低误差条件的持续时间的测量也可以用于设置其他传输参数，例如纠错码和交织器设置。

公开(公告)号：US6130918A

公开(公告)日：2000-10-10

申请号：US980504

申请日：1997-12-01

Applicant: Leslie D Humphrey ,  Andrew David Wallace

Inventor： Leslie D Humphrey ,  Andrew David Wallace

IPC: H04L27/26 ,  H04L27/34 ,  H04L27/04

CPC classification number: H04L27/2624 ,  H04L27/2614 ,  H04L27/3411

Abstract: A reduction in a peak-to-mean envelope power ratio of a multicarrier signal, represented as a time domain signal, is achieved by applying (76) an offset, indicative of a difference (74) between a mean signal level and a midpoint level of the time domain signal, to the time domain signal. Alternatively, constellation values of positive and negative frequency components are modified by differing functions to produce a modified data set. Preferably, the negative frequency components are set to a predetermined value (namely zero (124)) to provide an alternate coding scheme Once the multicarrier signal has been converted into a time domain representation, real and imaginary parts (126-128) of the modified data set that consequently only contain positive frequency components and zeros are compared with one another to identify (130) which of the real and imaginary parts has a lower peak-to-average signal ratio (134) for the time domain representation. Then, based upon which of the peak-to-average signal ratios is lowest (136), either the real and imaginary part of the time domain signal is selected for subsequent transmission (138).

Abstract translation: 通过应用（76）表示平均信号电平和中点电平之间的差值（74）的偏移来实现表示为时域信号的多载波信号的峰值平均包络功率比的减小 的时域信号，到时域信号。 或者，正和负频率分量的星座值由不同的功能修改以产生修改的数据集。 优选地，将负频率分量设置为预定值（即，零（124））以提供替代编码方案。一旦多载波信号已被转换成时域表示，修改后的实部和虚部（126-128） 因此，仅包含正频率分量和零的数据集彼此进行比较以识别（130）对于时域表示，实部和虚部中的哪一个具有较低的峰均平均信号比（134）。 然后，基于哪个峰值平均信号比最低（136），选择时域信号的实部和虚部用于随后的传输（138）。