Title:
ワイヤレス通信システムにおける送信のために信号を処理する方法および装置
Document Type and Number:
Japanese Patent JP3987317
Kind Code:
B2
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.
Inventors:
Bibek Kay Goyal
Lelena Kovacevik
Francois masson
Lelena Kovacevik
Francois masson
Application Number:
JP2001325359A
Publication Date:
October 10, 2007
Filing Date:
October 23, 2001
Export Citation:
Assignee:
Lucent Technologies, Inc.
International Classes:
H03M7/34; H03M7/30; H04L1/00
Domestic Patent References:
| JP10336040A | ||||
| JP2000349825A | ||||
| JP8307318A | ||||
| JP2001524277A | ||||
| JP2002516513A | ||||
| JP10178370A | ||||
| JP10257025A |
Other References:
Vinay Anant Vaishampayan,IEEE Transactions on Information theory,IEEE Transactions on Information theory,米国,1993年 5月,Vol.39 No.3
Attorney, Agent or Firm:
Masao Okabe
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
Hirofumi Mimata
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
Hirofumi Mimata