Title :
A probabilistic method for blind multi-user detection using array observations
Author :
Anton-Haro, Carles ; Fonollosa, Jose A R ; Fonollosa, Javier R.
Author_Institution :
Dept. de Teoria del Senyal i Comunicacions, Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
In this paper, a blind algorithm for detecting active users in a DS-CDMA system is presented. This probabilistic algorithm relies on the theory of hidden Markov models (HMM) and is completely blind in the sense that no knowledge of the signature sequences, channel state information or training sequences is required for any user. Additionally, observation through an array of sensors is also considered. Performance is verified via computer simulations, showing the near-far resistance of the analyzed procedure.
Keywords :
array signal processing; code division multiple access; hidden Markov models; probability; signal detection; spread spectrum communication; DS-CDMA system; active users detection; array observations; blind algorithm; blind multi-user detection; channel state information; computer simulations; hidden Markov models; near-far resistance; performance; probabilistic method; signature sequences; training sequences; Blind equalizers; Channel state information; Diversity reception; Hidden Markov models; Multiaccess communication; Multiple access interference; Multiuser detection; Sensor arrays; Timing; Tsunami;
Conference_Titel :
Signal Processing Advances in Wireless Communications, First IEEE Signal Processing Workshop on
Conference_Location :
Paris, France
Print_ISBN :
0-7803-3944-4
DOI :
10.1109/SPAWC.1997.630331
