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SINR Estimation and Orthogonality Factor Calculation of DS-CDMA Signals in MIMO Channels Employing Linear Transceiver Filters
Ericsson Research, Ericsson AB, Stockholm, Sweden. (Radio Communication Systems)
Ericsson Research, Ericsson AB, Stockholm, Sweden. (Radio Communication Systems)
2007 (English)In: Wireless Communications & Mobile Computing, ISSN 1530-8669, E-ISSN 1530-8677, Vol. 7, no 1, 103-112 p.Article in journal (Refereed) Published
Abstract [en]

A discrete-time model of DS-CDMA signaling using multiple transmit and receive antennas employing linear transceiver filters is derived. For each link, connecting a base-station to a wireless mobile user, the downlink signal to interference plus noise ratio (SINR) after despreading is derived analytically, and as a by-product an exact closed-form solution of the orthogonality factor is obtained.

The orthogonality factor is derived for any linear receiver structure that is implemented by a bank of correlators and for any linear combining techniques (such as MRC and MMSE), and for any number of transmit and/or receive antennas that utilize transmit (pre-RAKE) and receive (post-RAKE) filtering.

The MIMO DS-CDMA model is derived using a filter representation, and is extended to a vector/matrix formulation that permits a systematic and efficient way of computing the SINR in a radio network simulator.

Place, publisher, year, edition, pages
John Wiley & Sons, Ltd. , 2007. Vol. 7, no 1, 103-112 p.
Keyword [en]
multiple input multiple output, DS-CDMA, pre-RAKE, post-RAKE, SINR, orthogonality factor, BER, radio network simulation
National Category
Computer and Information Science
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-29787DOI: 10.1002/wcm.321ISI: 000243822400009OAI: oai:DiVA.org:kth-29787DiVA: diva2:398032
Note
QC 20110218Available from: 2011-02-16 Created: 2011-02-16 Last updated: 2017-12-11Bibliographically approved

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