BASEBAND ENCODING APPARATUS AND FREQUENCY MODULATION METHOD USING THE SAME IN DIGITAL BROADCASTING SYSTEM

Title:

BASEBAND ENCODING APPARATUS AND FREQUENCY MODULATION METHOD USING THE SAME IN DIGITAL BROADCASTING SYSTEM

Document Type and Number:

Japanese Patent JP2003283580

Kind Code:

A

Abstract:

To provide a baseband encoding apparatus and a frequency modulation method using the same for improving mobile receiving performance in a Vestigial Sideband (VSB) system by improving TOV in an AWGN channel by applying four levels of VSB (4-VSB) applied with a TCM encoder in order to complement a problem in an 8-VSB transmission system.

In the baseband encoding apparatus in the VSB transmission system, the apparatus is provided with a 1/2 code rate Trellis Coded Modulation (TCM) encoder having four types of signal levels by obtaining a 2-bit output signal based on a 1-bit input signal by utilizing M delayers (M is a natural number) and N binary adders (N is a natural number) in basebands, and a symbol mapper having four types of output symbols by converting four signal levels of said 1/2 code rate TCM encoder to symbols.

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Inventors:

BAE JAE-HWUI
SEO JAE-HYUN
KIM SEUNG WON
AHN CHIETEUK

Application Number:

JP2002323024A

Publication Date:

October 03, 2003

Filing Date:

November 06, 2002

Export Citation:

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Assignee:

KOREA ELECTRONICS TELECOMM

International Classes:

H04L27/10; H03M13/25; H04N7/015; H04L1/00; (IPC1-7): H04L27/10

Attorney, Agent or Firm:

Yoshikazu Tani (2 outside)

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