Abstract
Transmultiplexer is a major component of multicarrier communication system. Traditionally, it was implemented using SSB modulator and analog filters. But due to the limitation of high level of cross talk and interference in analog device, it has been replaced by DFT based transmultiplexer system. DFT based transmultiplexer comprises digital filter bank and multirate devices to provides better reduction in interference and cross talk. However, it provide relatively large overlapping sidelobes (-13dB). An alternative scheme known as cosine modulation where the design of synthesis and analysis part of the transmultiplexer is the cosine modulated filter bank. This paper reviews various recent patents in filter bank, transmultiplexer and its applications.
Keywords: Transmultiplexer, DFT, CMFB, filter bank, interchannel interference, crosstalk, polyphase
Recent Patents on Engineering
Title: Recent Patents in Transmultiplexers and Applications
Volume: 2 Issue: 1
Author(s): Rajiv Saxena, Ram K. Soni and Alok Jain
Affiliation:
Keywords: Transmultiplexer, DFT, CMFB, filter bank, interchannel interference, crosstalk, polyphase
Abstract: Transmultiplexer is a major component of multicarrier communication system. Traditionally, it was implemented using SSB modulator and analog filters. But due to the limitation of high level of cross talk and interference in analog device, it has been replaced by DFT based transmultiplexer system. DFT based transmultiplexer comprises digital filter bank and multirate devices to provides better reduction in interference and cross talk. However, it provide relatively large overlapping sidelobes (-13dB). An alternative scheme known as cosine modulation where the design of synthesis and analysis part of the transmultiplexer is the cosine modulated filter bank. This paper reviews various recent patents in filter bank, transmultiplexer and its applications.
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Cite this article as:
Saxena Rajiv, Soni K. Ram and Jain Alok, Recent Patents in Transmultiplexers and Applications, Recent Patents on Engineering 2008; 2 (1) . https://dx.doi.org/10.2174/187221208783478525
DOI https://dx.doi.org/10.2174/187221208783478525 |
Print ISSN 1872-2121 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-4047 |
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