The blind QRD-DMS beamformer and its VLSI systolic designs for DS/CDMA systems
نویسندگان
چکیده
In this paper, we present a blindly adaptive beamforming algorithm which is based on the second order interference estimation to maximize the received SINR. Using the desired signature code and the orthogonal to it code, a new code lter is introduced to decompose the receiving signals into two part : desired information and interference. The above method motivates us to develop the QR-decomposition based dominant eigen mode search (QRD-DMS) algorithm which is more numerically stable than the DMS one. The corresponding wavefront systolic architecture is also proposed for the VLSI implementation. Compare to the families of minimum mean square error (MMSE) algorithms which need training sequences, we have completed the maximum SINR families, as shown in Table 1, by proposing the QRD-DMS method which not only blindly updates the beamforming weights and converges as fast as the QRD-RLS method.
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تاریخ انتشار 1998