专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US07099403B1 Precoding for a non-linear codec 有权
标题翻译：非线性编解码器的预编码
公开(公告)号：US07099403B1
公开(公告)日：2006-08-29
申请号：US09621116
申请日：2000-07-21
申请人： Nuri R Dagdeviren
发明人： Nuri R Dagdeviren
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49
CPC分类号： H04L25/4927 , H04L25/03343 , H04L25/4975
摘要： A decoding system to achieve rates higher than 33.6 kbps in the analog modem to digital modem direction. The decoding system modifies the standard Tomlinson Harashima Precoding algorithm to adapt it for use in PCM modems. Instead of an arithmetic modulo operation that is implemented in the transmitter, the invention defines a Discrete Modulo Operation that performs the function of limiting the amplitude of the transmitted signal.
摘要翻译：解码系统在模拟调制解调器到数字调制解调器方向上实现高于33.6kbps的速率。解码系统修改了标准的Tomlinson Harashima Precoding算法，使其适用于PCM调制解调器。代替在发射机中实现的算术模运算，本发明定义了执行限制发射信号幅度的功能的离散模运算。

12. 发明授权

US06798851B1 Decoding for a non-linear codec 失效
标题翻译：解码非线性编解码器
公开(公告)号：US06798851B1
公开(公告)日：2004-09-28
申请号：US09620938
申请日：2000-07-21
申请人： Nuri R Dagdeviren
发明人： Nuri R Dagdeviren
IPC分类号： H03D100
CPC分类号： H04L25/4927 , H04L25/497
摘要： A decoding system to achieve rates higher than 33.6 kbps in the analog modem to digital modem direction. The decoding system modifies the standard Tomlinson Harashima Precoding algorithm to adapt it for use in PCM modems. Instead of an arithmetic modulo operation that is implemented in the transmitter, the invention defines a Discrete Modulo Operation that performs the function of limiting the amplitude of the transmitted signal.
摘要翻译：解码系统在模拟调制解调器到数字调制解调器方向上实现高于33.6kbps的速率。解码系统修改了标准的Tomlinson Harashima Precoding算法，使其适用于PCM调制解调器。代替在发射机中实现的算术模运算，本发明定义了执行限制发射信号幅度的功能的离散模运算。

13. 发明授权

US5394437A High-speed modem synchronized to a remote CODEC 失效
标题翻译：高速调制解调器与远程编解码器同步
公开(公告)号：US5394437A
公开(公告)日：1995-02-28
申请号：US963539
申请日：1992-10-20
申请人： Ender Ayanoglu , Nuri R. Dagdeviren , James E. Mazo , Burton R. Saltzberg
发明人： Ender Ayanoglu , Nuri R. Dagdeviren , James E. Mazo , Burton R. Saltzberg
IPC分类号： H04B14/04 , H04L7/02 , H04L7/033 , H04L25/49 , H04B1/38
CPC分类号： H04L7/0054 , H04B14/046 , H04L25/4927 , H04L7/0334
摘要： A modem that operates reliably at a symbol rate that corresponds to twice its bandwidth even when it is coupled to a receiving A/D converter that operates under control of a clock is realized by synchronizing the modem's operation to the A/D's clock. The superior operation of this modem advantageously extends to A/D clock frequencies beyond the frequency of twice the modem's bandwidth. To minimize quantization noise, the modem's output is conditioned to minimize intersymbol interference by adjusting the modem's output to the A/D converter's sampling times and slicing levels. When the A/D's clock is higher than twice the bandwidth of the modem's output signal, some intersymbol interference cannot be avoided. In accordance with this invention, the position and value of this interference is computed at the receiver and subtracted from the received signal.
摘要翻译：通过将调制解调器的操作与A / D的时钟同步，可以实现以对应于其带宽的两倍的符号速率可靠地操作的调制解调器，即使当其耦合到在时钟的控制下操作的接收A / D转换器时。该调制解调器的优越操作有利地扩展到超过调制解调器带宽两倍的A / D时钟频率。为了最小化量化噪声，调制解调器的输出通过将调制解调器的输出调整为A / D转换器的采样时间和切片电平来调节最小化符号间干扰。当A / D的时钟高于调制解调器输出信号带宽的两倍时，无法避免某些符号间干扰。根据本发明，在接收机处计算该干扰的位置和值，并将其从接收信号中减去。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式