公开(公告)号：GB2434948B

公开(公告)日：2008-04-09

申请号：GB0602195

申请日：2006-02-03

Applicant: MOTOROLA INC

Inventor： SIDON JEAN ,  ALON YANIV ,  SERFATY SALOMON

IPC: H03M13/45 ,  H04L1/00 ,  H04Q7/28

公开(公告)号：GB2434948A

公开(公告)日：2007-08-08

申请号：GB0602195

申请日：2006-02-03

Applicant: MOTOROLA INC

Inventor： SIDON JEAN ,  ALON YANIV ,  SERFATY SALOMON

IPC: H03M13/45 ,  H04L1/00 ,  H04Q7/28

Abstract: A wireless communication receiver comprises a SNR measurement logic (112) for measuring a SNR value of the received signal and signal processing logic (108) arranged to process the received wireless signal (Fig. 1, not shown). The signal processing logic (108) comprises demodulator logic (255) operably coupled to log likelihood ratio (LLR) logic (262) and decoding logic (265). A scaling factor (Q), dependent upon the measured signal-to-noise ratio, is applied to the vector of LLR values provided by de-mapping unit (260). The values are then saturated by converting any values outside the range [-A...+A] to one of -A or +A. The values are then quantized prior to input to a FEC decoder. Scaling factors corresponding to SNR values may be stored in a memory element. Applications include dual-mode TETRA-1 and TETRA-2 receivers.

公开(公告)号：WO2007092744B1

公开(公告)日：2008-08-21

申请号：PCT/US2007061501

申请日：2007-02-02

Applicant: MOTOROLA INC ,  SIDON JEAN ,  ALON YANIV ,  SERFATY SALOMON

Inventor： SIDON JEAN ,  ALON YANIV ,  SERFATY SALOMON

IPC: H04B1/69 ,  H04J13/02

CPC classification number: H04L1/0045 ,  H03M13/47 ,  H03M13/612 ,  H03M13/6577 ,  H03M13/6591 ,  H04L25/067

Abstract: A wireless communication unit (100) comprises a receiver for receiving a wireless signal having signal-to-noise ratio (SNR) measurement logic (112) for measuring a SNR value of the received signal and signal processing logic (108) arranged to process the received wireless signal. The signal processing logic comprises demodulator logic (255) operably coupled to log likelihood ratio (LLR) logic (262) and decoding logic (265). A scaling factor (Q) is applied to the LLR logic (262) dependent upon the measured signal-to-noise ratio.

Abstract translation: 无线通信单元（100）包括用于接收具有信噪比（SNR）测量逻辑（112）的无线信号的接收机，用于测量接收信号的SNR值，并且信号处理逻辑（108）被布置成处理 收到无线信号。 信号处理逻辑包括可操作地耦合到对数似然比（LLR）逻辑（262）和解码逻辑（265）的解调器逻辑（255）。 取决于测量的信噪比，缩放因子（Q）被应用于LLR逻辑（262）。

公开(公告)号：WO2007092744A2

公开(公告)日：2007-08-16

申请号：PCT/US2007061501

申请日：2007-02-02

Applicant: MOTOROLA INC ,  SIDON JEAN ,  ALON YANIV ,  SERFATY SALOMON

Inventor： SIDON JEAN ,  ALON YANIV ,  SERFATY SALOMON

CPC classification number: H04L1/0045 ,  H03M13/47 ,  H03M13/612 ,  H03M13/6577 ,  H03M13/6591 ,  H04L25/067

Abstract: A wireless communication unit (100) comprises a receiver for receiving a wireless signal having signal-to-noise ratio (SNR) measurement logic (112) for measuring a SNR value of the received signal and signal processing logic (108) arranged to process the received wireless signal. The signal processing logic comprises demodulator logic (255) operably coupled to log likelihood ratio (LLR) logic (262) and decoding logic (265). A scaling factor (Q) is applied to the LLR logic (262) dependent upon the measured signal-to-noise ratio.

Abstract translation: 无线通信单元（100）包括用于接收具有信噪比（SNR）测量逻辑（112）的无线信号的接收机，用于测量接收信号的SNR值，并且信号处理逻辑（108）被布置成处理 收到无线信号。 信号处理逻辑包括可操作地耦合到对数似然比（LLR）逻辑（262）和解码逻辑（265）的解调器逻辑（255）。 取决于测量的信噪比，缩放因子（Q）被应用于LLR逻辑（262）。