公开(公告)号：US20060198459A1

公开(公告)日：2006-09-07

申请号：US10564832

申请日：2004-07-07

Applicant: Robert Fischer ,  Christoph Windpassinger

Inventor： Robert Fischer ,  Christoph Windpassinger

IPC: H04L1/02

CPC classification number: H04L25/4975 ,  H04L1/0618 ,  H04L25/03343 ,  H04L2025/0342

Abstract: Several subscriber signals are transmitted simultaneously and at the same frequency by a central transmitter to several decentralized receivers which do not cooperate with each other, by digital message transmission in a broadcast channel. A common transmission signal, which enables an error-free individual reception, should be generated with knowledge of all subscriber signals and of the current transmission conditions, by signal preprocessing methods on the transmission side. Known nonlinear precoding methods totally suppress the interference signals, so that the channel diversity cannot be used. In the claimed precoding method, the occurring interference signals are, on the contrary, taken into account. On the basis of a modulo arithmetic calculation, the transmission channel is not totally equalized, but virtually divided, so that the transmission of the subscriber signals is continued periodically; the signals are selected according to the minimal transmission power and pre-equalized, in a linear manner, and the residual interferences, still remaining between the subscriber signals, may assume special values from a preset set of values. The set of values is selected, so that the interference signals of the other subscribers are also merely reflected in the otherwise already existing periodic continuation and can be suppressed or used as required by a modulo decision, on the reception side.

Abstract translation: 通过广播频道中的数字消息传输，多个用户信号由中央发射机同时传输，并以相同的频率被传输到不彼此协作的若干分散式接收机。 通过发送侧的信号预处理方法，可以利用所有用户信号和当前传输条件的知识来生成能够实现无错误的单独接收的公共传输信号。 已知的非线性预编码方法完全抑制干扰信号，使得不能使用信道分集。 在所要求的预编码方法中，相反地考虑了所发生的干扰信号。 在模运算的基础上，传输信道并不完全相等，而是虚拟分割，使得用户信号的传输周期性地继续; 根据最小传输功率选择信号并以线性方式进行预均衡，并且仍然保留在用户信号之间的残留干扰可以从预设的一组值采取特殊值。 选择这组值，使得其他用户的干扰信号也仅仅反映在另外已经存在的周期性继续中，并且可以在接收侧根据模决定的要求被抑制或使用。

公开(公告)号：US08130854B2

公开(公告)日：2012-03-06

申请号：US10564832

申请日：2004-07-07

Applicant: Robert Fischer ,  Christoph Windpassinger

Inventor： Robert Fischer ,  Christoph Windpassinger

IPC: H04B7/02 ,  H04L5/12 ,  H03M7/00

CPC classification number: H04L25/4975 ,  H04L1/0618 ,  H04L25/03343 ,  H04L2025/0342

Abstract: Several subscriber signals are transmitted simultaneously and at the same frequency by a central transmitter to several decentralized receivers which do not cooperate with each other, by digital message transmission in a broadcast channel. A common transmission signal, which enables an error-free individual reception, should be generated with knowledge of all subscriber signals and of the current transmission conditions, by signal preprocessing methods on the transmission side. Known nonlinear precoding methods totally suppress the interference signals, so that the channel diversity cannot be used. In the claimed precoding method, the occurring interference signals are, on the contrary, taken into account. On the basis of a modulo arithmetic calculation, the transmission channel is not totally equalized, but virtually divided, so that the transmission of the subscriber signals is continued periodically; the signals are selected according to the minimal transmission power and pre-equalized, in a linear manner, and the residual interferences, still remaining between the subscriber signals, may assume special values from a preset set of values. The set of values is selected, so that the interference signals of the other subscribers are also merely reflected in the otherwise already existing periodic continuation and can be suppressed or used as required by a modulo decision, on the reception side.

Abstract translation: 通过广播频道中的数字消息传输，多个用户信号由中央发射机同时传输，并以相同的频率被传输到不彼此协作的若干分散式接收机。 通过发送侧的信号预处理方法，可以利用所有用户信号和当前传输条件的知识来生成能够实现无错误的单独接收的公共传输信号。 已知的非线性预编码方法完全抑制干扰信号，使得不能使用信道分集。 在所要求的预编码方法中，相反地考虑了所发生的干扰信号。 在模运算的基础上，传输信道并不完全相等，而是虚拟分割，使得用户信号的传输周期性地继续; 根据最小传输功率选择信号并以线性方式进行预均衡，并且仍然保留在用户信号之间的残留干扰可以从预设的一组值采取特殊值。 选择这组值，使得其他用户的干扰信号也仅仅反映在另外已经存在的周期性继续中，并且可以在接收侧根据模决定的要求被抑制或使用。