Title :
Blind CDMA interference rejection in multipath channels
Author :
Mangalvedhe, Nitin R. ; Reed, Jeffrey H.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
The performance of conventional code division multiple access (CDMA) receivers is limited by multiple access interference (MAI) and near-far effects. The severity of the problem is increased in multipath channels. A RAKE receiver exploits multipath diversity but is unable to suppress interference. Adaptive receivers can exploit multipath and suppress MAI, however this approach requires a training sequence. This paper presents a new blind algorithm that is capable of optimally combining multipath while canceling MAI
Keywords :
code division multiple access; diversity reception; interference suppression; land mobile radio; multipath channels; radio receivers; radiofrequency interference; CDMA receivers; RAKE receiver; adaptive receivers; blind CDMA interference rejection; blind algorithm; code division multiple access; linearly constrained constant modulus algorithm; mobile radio; multipath channels; multipath diversity; performance; AWGN; Base stations; Diversity reception; Fading; Interference suppression; Least squares approximation; Multiaccess communication; Multipath channels; Multiple access interference; RAKE receivers;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.596311
