Invention Grant
US07899106B2 Mitigating OFDM receiver interference caused by intermittent signal transmission
有权
减少由间歇信号传输引起的OFDM接收机干扰
- Patent Title: Mitigating OFDM receiver interference caused by intermittent signal transmission
- Patent Title (中): 减少由间歇信号传输引起的OFDM接收机干扰
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Application No.: US11468822Application Date: 2006-08-31
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Publication No.: US07899106B2Publication Date: 2011-03-01
- Inventor: William O. Camp, Jr.
- Applicant: William O. Camp, Jr.
- Applicant Address: SE Lund
- Assignee: Sony Ericsson Mobile Communications AB
- Current Assignee: Sony Ericsson Mobile Communications AB
- Current Assignee Address: SE Lund
- Agency: Coats & Bennett, P.L.L.C.
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
Degradation of the OFDM signal carrying DVB-H content, caused by GSM burst transmission, is overcome without the need for hardware to constrain the GSM transmission spectrum by the modulating of the OFDM signal and utilizing the interleaving and Forward Error Correction (FEC) defined in the DVB-H standard to correct the errors caused by GSM transmission interference. A pattern in time and frequency of the scattered pilots in the OFDM signal is detected during a period of no burst transmission. During burst transmissions from the transmitter, scattered pilots are inserted into the received OFDM signal according to the pattern. An FFT demodulator utilizes the inserted scattered pilots to perform frame synchronization when the OFDM signal is degraded by interference from the burst transmission. The demodulated signal is de-interleaved, and bit errors due to the burst transmission interference are corrected by FEC decoders.
Public/Granted literature
- US20080056391A1 Mitigating OFDM Receiver Interference Caused by Intermittent Signal Transmission Public/Granted day:2008-03-06
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