JP3345334B2

2G

Title

ADAPTIVE EQUALIZER FOR SUBSCRIBER DEVICE SYSTEM FOR RADIO DIGITAL TELEPHONE SYSTEM

Application Number:

JP19980030496

Publication Date:

18-11-2002

Current Assignee:

Family ID:

Application Date:

28-01-1998

Declaring Company:

Publication Country:

US

Priority Date:

07-08-1986

Title

ADAPTIVE EQUALIZER FOR SUBSCRIBER DEVICE SYSTEM FOR RADIO DIGITAL TELEPHONE SYSTEM

Application Number:

JP19980030496

Family ID:

Publication Country:

US

Publication Date:

18-11-2002

Application Date:

28-01-1998

Priority Date:

07-08-1986

Current Assignee:

Declaring Company:

Abstract  Abstract

PROBLEM TO BE SOLVED: To attain miniaturization and price-down and to improve performance by comparing the training signal of the time multiplexed I and Q sampled with a desired output and generating a frequency correct signal for synchronism error and frequency output error correction.

SOLUTION: The input of the line 116 includes the time multiplexed I and Q samples in the form of two paired complex samples per the symbol and is inputted to a MODEM processor 40 and demodulated. The demodulated I and Q samples are applied to an equalizer module and minimize the error energy of received data stream the correction error energy of delayed data stream the correction error energy of selected data stream and data stream energy from upside and downside adjacent channels. The training signal for this purpose is generated and impressed and a weight coefficient is provided and stored in an RAM 32 so that a high-stability equalizer composed of a little parts is provided.

COPYRIGHT: (C)1998JPO&Japio

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.