公开(公告)号：JP2002198821A

公开(公告)日：2002-07-12

申请号：JP2001325359

申请日：2001-10-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOYAL VIVEK K ,  KOVACEVIC JELENA ,  MASSON FRANCOIS

IPC: H03M7/34 ,  H03M7/30 ,  H04L1/00

Abstract: PROBLEM TO BE SOLVED: To provide MD coding which can be suitably embodied in such a wireless communication system application as the frequency hopping wireless system. SOLUTION: A multiple-description coder generates many different descriptions in a prescribed portion of signals in a wireless communication system by using multiple description scalar quantization(MDSQ) or another type of multiple description coding. The different descriptions in the prescribed portion of the signals are arranged in a plurality of packets, so that at least the first description in the prescribed portion may be arranged in the first packet and the second description may be arranged in the second packet. Each packet is transmitted by using a frequency hopping modulator and the hopping rate of the modulator is selected or constituted based, at least partially, on the number of descriptions generated with respect to the different portions of the signals.

公开(公告)号：DE60100173D1

公开(公告)日：2003-05-15

申请号：DE60100173

申请日：2001-10-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOYAL VIVEK K ,  KOVACEVIC JELENA ,  MASSON FRANCOIS

IPC: H03M7/34 ,  H03M7/30 ,  H04L1/00 ,  H04B7/06

Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packets such that at least a first description of the given portion is placed in a first packet and a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is selected or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.

公开(公告)号：CA2359756C

公开(公告)日：2006-04-04

申请号：CA2359756

申请日：2001-10-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MASSON FRANCOIS ,  GOYAL VIVEK K ,  KOVACEVIC JELENA

IPC: H03M7/34 ,  H03M13/47 ,  H03M7/30 ,  H04L1/00 ,  H04L1/22 ,  H04M1/725 ,  H04Q7/36

Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packe ts such that at least a first description of the given portion is placed in a first packet a nd a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is select ed or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.

公开(公告)号：CA2359756A1

公开(公告)日：2002-04-27

申请号：CA2359756

申请日：2001-10-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOYAL VIVEK K ,  MASSON FRANCOIS ,  KOVACEVIC JELENA

IPC: H03M7/34 ,  H03M7/30 ,  H04L1/00 ,  H03M13/47 ,  H04L1/22 ,  H04Q7/36 ,  H04M1/725

Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packe ts such that at least a first description of the given portion is placed in a first packet a nd a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is select ed or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.

公开(公告)号：DE60100173T2

公开(公告)日：2003-12-11

申请号：DE60100173

申请日：2001-10-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOYAL VIVEK K ,  KOVACEVIC JELENA ,  MASSON FRANCOIS

IPC: H03M7/34 ,  H03M7/30 ,  H04L1/00 ,  H04B7/06

Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packets such that at least a first description of the given portion is placed in a first packet and a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is selected or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.