OFDM receiving circuit having multiple demodulation paths

Abstract

Embodiments according to the application relate to an OFDM (orthogonal frequency division multiplexing) receiving circuit and methods thereof configured to have a plurality of demodulation paths, which can increase or improve a performance of an ADC and / or a filter.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2006-0105467 filed on October 30, 2006 at the Korean Intellectual Property Office under Title 35, United States Code, Section 119(a), the publication of which is hereby The content is incorporated by reference in its entirety. technical field [0003] The present invention relates to an OFDM (Orthogonal Frequency Division Multiplexing) receiving circuit, more specifically, relates to an OFDM receiving circuit with multiple demodulation paths to improve the performance of ADC and filter. Background technique [0004] OFDM is a type of multicarrier modulation in which a serially input symbol array is converted into a parallel form by N block units, each element symbol is then modulated into subcarriers with mutual orthogonality, and the subcarriers are then summed for transmission. OFDM is robust to multipath fading that occurs in a wireless communi...

AI Technical Summary

Problems solved by technology

Thus, a problem arises because the frequency characteristic deteriorates as the signal band increases, or because power consumption is increased to maintain the frequency characteristic

Then, since the filter 17 of the OFDM receiver having a single demodulation path should be able to operate in a wide signal range, one of frequency characteristics and power consumption should be sacrificed

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