Title :
Multipath channel estimation for asynchronous random-code-division multiple-access
Author :
Alexander, Paul D. ; Grant, Alex J.
Author_Institution :
Inst. for Telecommun. Res., Univ. of South Australia, The Levels, SA, Australia
Abstract :
An estimator for slowly varying multipath channels for each user in a random-code-division multiple-access communications system is constructed and analysed. The estimator requires no training sequence and we compare the performance to the case when such a sequence is available. We show that mean square error in estimation decreases as the inverse of the sample size. It is also shown that the proposed method performs better than other known techniques applied to equivalent fixed-code systems
Keywords :
code division multiple access; codes; land mobile radio; least mean squares methods; multipath channels; parameter estimation; radio networks; spread spectrum communication; asynchronous random code division multiple access; fixed code systems; mean square error; mobile radio network; multipath channel estimation; performance; random spreading codes; sample size; slowly varying multipath channels; training sequence; Australia; Channel estimation; Communication systems; Correlators; Decoding; Land mobile radio; Mean square error methods; Multiaccess communication; Multipath channels; Receivers;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.605830
