公开(公告)号：WO1998005117A1

公开(公告)日：1998-02-05

申请号：PCT/US1997010064

申请日：1997-06-05

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  HESS, Garry, C. ,  MARSAN, Mark, J. ,  BIRCHLER, Mark, A.

IPC: H03D01/04

CPC classification number: H04L1/20

Abstract: A communication system (100) employs a method and apparatus for mitigating distortion effects and enhancing signal usability determinations in a receiver (102). The receiver receives a discrete information signal that includes a stream of information symbols. Each information symbol (124) of the stream includes two components: a desired component and an undesired component that includes interference and distortion. The receiver determines an estimate (126) of the desired component of an information symbol and an estimates (130) of the undesired component of the information symbol based on the information symbol itself and its desired component estimate. The undesired component estimate is then scaled by a scaling factor (132) that is derived based on the desired component estimate. An enhanced determination of signal usability (136) for the received symbol is finally determined based on the scaled undesired component estimate (134). In this manner, the enhanced signal usability determination approaches being a function of interference only, substantially exclusive of distortion.

Abstract translation: 通信系统（100）采用减轻接收机（102）中的失真效应和增强信号可用性确定的方法和装置。 接收器接收包括信息符号流的离散信息信号。 流的每个信息符号（124）包括两个组件：期望的组件和包括干扰和失真的不期望的组件。 接收机基于信息符号本身及其期望的分量估计来确定信息符号的期望分量的估计（126）和信息符号的不期望分量的估计（130）。 然后通过基于期望的分量估计导出的缩放因子（132）来缩放不期望的分量估计。 基于经缩放的不期望的分量估计（134）最终确定对接收符号的信号可用性（136）的增强的确定。 以这种方式，增强的信号可用性确定方法仅仅是干扰的函数，基本上不包括失真。

公开(公告)号：EP1080593B1

公开(公告)日：2006-06-07

申请号：EP99925910.4

申请日：1999-05-27

Applicant: MOTOROLA, INC.

Inventor： BIRCHLER, Mark, A. ,  MARTURANO, Lawrence, J. ,  MARSAN, Mark, J.

IPC: H04Q7/20

CPC classification number: H04W36/32 ,  H04W64/00

Abstract: The present invention provides a method for improving the communication coverage in a multi-cell communication system (100) which employs neighbor cell lists. A cell site (114) provides a communication unit (128) within its cell (112) with communication and a neighbor cell list. The neighbor cell list (200) informs the communication unit of other cells which are possible hand-off targets. When the fixed network equipment (FNE) detects that a particular communication unit (128) has entered another cell and/or needs to hand-off its communication to another cell site but has been denied, the cell site (114) sends the communication unit the neighbor cell list related to the new cell. With a new neighbor cell list (300), the communication unit (128) can now attempt to maintain its communication by handing-off to cells unknown before. In this manner the effective communication coverage of the system is improved.

公开(公告)号：EP1080593A1

公开(公告)日：2001-03-07

申请号：EP99925910.4

申请日：1999-05-27

Applicant: MOTOROLA, INC.

Inventor： BIRCHLER, Mark, A. ,  MARTURANO, Lawrence, J. ,  MARSAN, Mark, J.

IPC: H04Q7/20

CPC classification number: H04W36/32 ,  H04W64/00

Abstract: The present invention provides a method for improving the communication coverage in a multi-cell communication system (100) which employs neighbor cell lists. A cell site (114) provides a communication unit (128) within its cell (112) with communication and a neighbor cell list. The neighbor cell list (200) informs the communication unit of other cells which are possible hand-off targets. When the fixed network equipment (FNE) detects that a particular communication unit (128) has entered another cell and/or needs to hand-off its communication to another cell site but has been denied, the cell site (114) sends the communication unit the neighbor cell list related to the new cell. With a new neighbor cell list (300), the communication unit (128) can now attempt to maintain its communication by handing-off to cells unknown before. In this manner the effective communication coverage of the system is improved.