Title :
Affine Projection Type Blind Multiuser Detection
Author :
Tanabe, Nari ; Furukawa, Toshihiro ; Tsujii, Shigeo
Author_Institution :
Tokyo Univ. of Sci., Chino
Abstract :
We propose an affine projection type multiuser detection for the DS-CDMA (direct sequence code division multiple access) system. This proposed algorithm estimates the desired information symbols using the conventional method based on affine projection algorithm, and then modifies the constraints of the conventional method in order to achieve the good MAI (multiple access interference) suppression capability of the blind multiuser detection. The remarkable feature of the proposed algorithm is realization of the same performance as those of the optimum linear MMSE (minimum mean square error) multiuser detector based on MOE (minimum output energy) criterion. Numerical examples show the effectiveness of the proposed algorithm.
Keywords :
code division multiple access; interference suppression; least mean squares methods; multiuser detection; radiofrequency interference; spread spectrum communication; DS-CDMA; affine projection algorithm; blind multiuser detection; direct sequence code division multiple access system; linear MMSE; minimum mean square error; minimum output energy criterion; multiple access interference suppression; AWGN; Detectors; Interference constraints; Least squares approximation; Mean square error methods; Multiaccess communication; Multiple access interference; Multiuser detection; Resonance light scattering; Vectors;
Conference_Titel :
Digital Signal Processing Workshop and 5th IEEE Signal Processing Education Workshop, 2009. DSP/SPE 2009. IEEE 13th
Conference_Location :
Marco Island, FL
Print_ISBN :
978-1-4244-3677-4
Electronic_ISBN :
978-1-4244-3677-4
DOI :
10.1109/DSP.2009.4785993
