IP Library Granted Patent US 8,238,226
Granted Patent B2
US 8,238,226 · App. 12/505,420 · Granted Aug 7, 2012

OFDM communication apparatus

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Quick Facts
Patent No.
US 8,238,226
App. No.
12/505,420
Granted
Aug 7, 2012
Kind
B2
Abstract

An OFDM communication apparatus includes a determining section determine a number of known signals for transmission path estimation to be inserted in a transmit signal based on channel quality with respect to a communicating party, and a generating section performs inverse Fourier transform processing on an information signal and the number of known signals for transmission path estimation determined by the determining section and generates a transmit signal for the communicating party. The apparatus achieves both an improvement in demodulated signal error rate characteristics and an improvement in information signal transmission efficiency.

Claims (4)

1. A transmitting apparatus comprising:

a determining section that determines a number of known signals for transmission path estimation which a communicating party uses for the transmission path estimation; and

a generating section that generates a transmission signal including the determined number of known signals for the transmission path estimation,

wherein, for a broadcast channel, the determining section increases the number of known signals for the transmission path estimation to insert in the transmission signal compared to other non-broadcast communication channels.

Assignments (10)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 19, 2017
From: INVENTERGY, INC.
To: INVT SPE LLC
Reel/Frame 042885/0685 →
SECURITY INTEREST Recorded Jan 4, 2017
From: INVENTERGY GLOBAL, INC.; INVENTERGY, INC.; EON COMMUNICATION SYSTEMS, INC.; INVENTERGY HOLDING, LLC; INVENTERGY INNOVATIONS, LLC; INVENTERGY IOT, LLC; INVENTERGY LBS, LLC
To: DBD CREDIT FUNDING LLC, AS COLLATERAL AGENT
Reel/Frame 041247/0908 →
RELEASE OF SECURITY INTEREST Recorded Nov 3, 2014
From: HUDSON BAY IP OPPORTUNITIES MASTER FUND, LP, FOR ITSELF AND AS COLLATERAL AGENT FOR CERTAIN BUYERS
To: INVENTERGY, INC.
Reel/Frame 034150/0298 →
RELEASE OF SECURITY INTEREST Recorded Oct 14, 2014
From: HUDSON BAY IP OPPORTUNITIES MASTER FUND, LP
To: INVENTERGY, INC
Reel/Frame 033987/0866 →
SECURITY INTEREST Recorded Oct 1, 2014
From: INVENTERGY, INC
To: DBD CREDIT FUNDING LLC
Reel/Frame 033883/0330 →
SECURITY INTEREST Recorded Mar 25, 2014
From: INVENTERGY, INC.
To: HUDSON BAY IP OPPORTUNITIES MASTER FUND, LP, AS COLLATERAL AGENT FOR CERTAIN BUYERS
Reel/Frame 032525/0081 →
RELEASE OF SECURITY INTEREST Recorded Mar 25, 2014
From: BEYERS, JOSEPH
To: INVENTERGY, INC.
Reel/Frame 032513/0759 →
SECURITY AGREEMENT Recorded Jan 29, 2014
From: INVENTERGY, INC.
To: HUDSON BAY IP OPPORTUNITIES MASTER FUND, LP, AS COLLATERAL AGENT
Reel/Frame 032136/0844 →
SECURITY AGREEMENT Recorded Jan 27, 2014
From: INVENTERGY, INC.
To: BEYERS, JOSEPH
Reel/Frame 032127/0234 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 3, 2014
From: PANASONIC CORPORATION
To: INVENTERGY, INC.
Reel/Frame 031911/0911 →