公开(公告)号：DE69917270T2

公开(公告)日：2004-09-23

申请号：DE69917270

申请日：1999-04-16

Applicant: MOTOROLA INC

Inventor： LOVE T ,  ASHLEY P ,  PROCTOR LEE ,  BAROT ANIL ,  COHEN ARNIE

IPC: H04B7/005 ,  H04J3/16 ,  H04L1/00 ,  H04W52/30

Abstract: Forward link communication capacity of a communication system, which is providing from a base station to a number of mobile stations a number of forward communication links corresponding to the plurality of mobile stations, is controlled by receiving gain setting associated with at least one of the forward communication links, comparing the gain setting with a gain threshold, and adjusting a first encoding rate of at least one of the forward communication links to a second encoding rate based on the comparing. A gain offset attunes the gain threshold to update the gain threshold according to a latest condition of the communication system. The gain offset further is used to determine blocking of an incoming call to the communication system.

公开(公告)号：DE69735275D1

公开(公告)日：2006-04-20

申请号：DE69735275

申请日：1997-11-04

Applicant: MOTOROLA INC

Inventor： ASHLEY P ,  PROCTOR M

IPC: H04M1/60 ,  H04M9/00 ,  H04B3/20 ,  H04B3/23 ,  H04M9/08 ,  H04M11/00

公开(公告)号：DE69931641T2

公开(公告)日：2006-10-05

申请号：DE69931641

申请日：1999-08-24

Applicant: MOTOROLA INC

Inventor： ASHLEY P ,  PENG WEIMIN

IPC: H04B7/216 ,  G10L19/10 ,  H03M7/30

Abstract: To achieve high quality speech reconstruction at low bit rates, constraints on position combinations among two or more pulses (403) are implemented. By placing constraints on position combinations, certain combinations of pulses are prohibited which allows the most significant pulses to always be coded, thereby improving speech quality. After all valid combinations are considered, a list of pulse pairs (codebook) which can be indexed using a single, predetermined bit length codeword is produced. The codeword is transmitted to a destination where it is used by a decoder to reconstruct the original information signal.

公开(公告)号：DE69931641D1

公开(公告)日：2006-07-06

申请号：DE69931641

申请日：1999-08-24

Applicant: MOTOROLA INC

Inventor： ASHLEY P ,  PENG WEIMIN

IPC: H04B7/216 ,  G10L19/10 ,  H03M7/30

Abstract: To achieve high quality speech reconstruction at low bit rates, constraints on position combinations among two or more pulses (403) are implemented. By placing constraints on position combinations, certain combinations of pulses are prohibited which allows the most significant pulses to always be coded, thereby improving speech quality. After all valid combinations are considered, a list of pulse pairs (codebook) which can be indexed using a single, predetermined bit length codeword is produced. The codeword is transmitted to a destination where it is used by a decoder to reconstruct the original information signal.

公开(公告)号：DE69735275T2

公开(公告)日：2006-07-27

申请号：DE69735275

申请日：1997-11-04

Applicant: MOTOROLA INC

Inventor： ASHLEY P ,  PROCTOR M

IPC: H04M1/60 ,  H04M9/00 ,  H04B3/20 ,  H04B3/23 ,  H04M9/08 ,  H04M11/00

公开(公告)号：DE69830721T2

公开(公告)日：2005-12-15

申请号：DE69830721

申请日：1998-01-05

Applicant: MOTOROLA INC

Inventor： ASHLEY P

IPC: G10L21/02 ,  G10L11/02 ,  G10L19/00 ,  G10L19/14 ,  H04B14/04 ,  H04J3/00 ,  H04L29/08

Abstract: To accurately determine rate and voice activity in moderate-to-low signal-to-noise ratios (SNRs) to maximize voice quality, system capacity and/or battery life, parameters from a noise suppression system are used as inputs to the rate determination function. Using this method, more of the speech is extracted from the background noise and a lower number of false onsets during fluctuating noise conditions compared with conventional systems are detected. The method is beneficial for voice activity detection (VAD) as well as rate determination (RDA) and unlike other RDA/VAD implementations, is independent of the type of speech coder employed (IS-127, CDG-27, IS-96 and GSM).

公开(公告)号：DE69830721D1

公开(公告)日：2005-08-04

申请号：DE69830721

申请日：1998-01-05

Applicant: MOTOROLA INC

Inventor： ASHLEY P

IPC: G10L21/02 ,  G10L11/02 ,  G10L19/00 ,  G10L19/14 ,  H04B14/04 ,  H04J3/00 ,  H04L29/08

Abstract: To accurately determine rate and voice activity in moderate-to-low signal-to-noise ratios (SNRs) to maximize voice quality, system capacity and/or battery life, parameters from a noise suppression system are used as inputs to the rate determination function. Using this method, more of the speech is extracted from the background noise and a lower number of false onsets during fluctuating noise conditions compared with conventional systems are detected. The method is beneficial for voice activity detection (VAD) as well as rate determination (RDA) and unlike other RDA/VAD implementations, is independent of the type of speech coder employed (IS-127, CDG-27, IS-96 and GSM).

公开(公告)号：DE69917270D1

公开(公告)日：2004-06-17

申请号：DE69917270

申请日：1999-04-16

Applicant: MOTOROLA INC

Inventor： LOVE T ,  ASHLEY P ,  PROCTOR LEE ,  BAROT ANIL ,  COHEN ARNIE

IPC: H04B7/005 ,  H04J3/16 ,  H04L1/00 ,  H04W52/30

Abstract: Forward link communication capacity of a communication system, which is providing from a base station to a number of mobile stations a number of forward communication links corresponding to the plurality of mobile stations, is controlled by receiving gain setting associated with at least one of the forward communication links, comparing the gain setting with a gain threshold, and adjusting a first encoding rate of at least one of the forward communication links to a second encoding rate based on the comparing. A gain offset attunes the gain threshold to update the gain threshold according to a latest condition of the communication system. The gain offset further is used to determine blocking of an incoming call to the communication system.