Invention Grant
- Patent Title: OFDM pre-equalizing
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Application No.: US12108552Application Date: 2008-04-24
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Publication No.: US08457250B2Publication Date: 2013-06-04
- Inventor: Ralf Bohnke , Seiichi Izumi
- Applicant: Ralf Bohnke , Seiichi Izumi
- Applicant Address: DE Cologne
- Assignee: Sony Deutschland GmbH
- Current Assignee: Sony Deutschland GmbH
- Current Assignee Address: DE Cologne
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP00125436 20001120
- Main IPC: H04L27/00
- IPC: H04L27/00 ; H04K1/10

Abstract:
For example in case of an OFDM multicarrier transmission system the transmission characteristics of subcarriers of a multicarrier transmission system using a plurality of antenna elements (3, 3′) can be adjusted. Particularly the power and the phase of the subcarriers can be adapted. To this object the subcarrier frequency channel (2, 2′) characteristics of the multicarrier transmission are detected (11, 11′) at the side of the transmitter (3). The power of each subcarrier is then distributed by a weighting unit (14, 14′). The subcarriers can be further pre-equalized (1, 1′) by dividing the subcarrier signal respectively by the sum of the squared magnitude of the frequency channel characteristics of all subcarrier signals or a frequency characteristic of the selected antenna element (3, 3′).
Public/Granted literature
- US20080205546A1 OFDM PRE-EQUALIZING Public/Granted day:2008-08-28
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