An Experimental Approach to CDMA and Interference - download pdf or read online

By Luca Fanucci, Marco Luise, Filippo Giannetti, Massimo Rovini

ISBN-10: 144195421X

ISBN-13: 9781441954213

An Experimental method of CDMA and Interference Mitigation was once written with the admittedly bold purpose of filling the space among conversation concept and VLSI implementation, and therefore to supply a extra general/theoretical method of the layout, improvement, and trying out of a CDMA receiver. therefore, the suggestions and methods which are awarded grow to be acceptable to a extra basic type of electronic instant modems when it comes to receiver structure layout and implementation. because the reader will simply discover, the topic of electronic modem layout and implementation is addressed within the publication ranging from a theoretical method (supported via right bibliographic references), and is through software matters, with regards to an ESA scan assumed as a case learn. a whole layout circulation, from specification to implementation, together with trying out and ultimate verification is then offered. This leads the reader step by step to an intensive realizing of CDMA transmission and detection, and constitutes a realistic counsel for the layout of VLSI instant cellular terminals.

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Extra info for An Experimental Approach to CDMA and Interference Mitigation: From System Architecture to Hardware Testing through VLSI Design

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40) we have set Ec Eb / G p . 91) and with some manipulations we obtain for QPSK P e § ¨ 1 ¨ 2 Eb ˜ Q¨ N  1 2 Eb N0 1 ¨ N0 ¨ M © · ¸ ¸ ¸. 92) From the expressions above it turns out that the MAI degrades the BER performance. In particular, the degradation increases with the number of interfering channels and decreases for large processing gains. 92) collapses to the conventional BER expression relevant to (narrowband) QPSK modulation over AWGN channel and matched filter detection. However, we must remark that in the more general case of CDMA transmissions with MAI ( N !

The solution to this issue lies in the notion of cellular network with frequency re-use as outlined in Section 2 of Chapter 1. Of course, frequency reuse has an impact on the overall network efficiency in terms of users/cell (or users/km2) since the number of channels allocated to each cell is a fraction 1/Q of the overall channels allocated to the provider, where Q is the frequency re-use factor (the number of cells in a cluster). The same concept of coverage area partitioning with channel re-use applies to multi-beam satellite networks as those envisaged in Section 3 of Chapter 1.

Therefore, the designer’s efficiency must be improved by a new design methodology which benefits from the re-use of Intellectual Property (IP) and which is supported by appropriate tools that allow the joint design and verification of heterogeneous hardware and software. Particularly, owing to the exponential increase of both design gate counts and verification vectors, the verification gap grows faster than the design size by a factor of 2/3 according to the International Technology Roadmap for Semiconductor (ITRS) road map.

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An Experimental Approach to CDMA and Interference Mitigation: From System Architecture to Hardware Testing through VLSI Design by Luca Fanucci, Marco Luise, Filippo Giannetti, Massimo Rovini

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