Title :
Complex spreading sequences with a wide range of correlation properties
Author :
Oppermann, Ian ; Vucetic, Branka S.
Author_Institution :
Dept. of Electr. Eng., Sydney Univ., NSW, Australia
fDate :
3/1/1997 12:00:00 AM
Abstract :
This paper presents a new family of complex valued pseudo-random sequences for use in coded multiple access communication systems. The family offers a very wide range of values for both auto-correlation (AC) and cross-correlation (CC) functions, allowing great flexibility in the selection of characteristics of sequence sets. Based on the measure described in this paper for the mean-square aperiodic AC and CC values of a set of sequences, the correlation properties of sets of these sequences are compared to well-known sequence sets, and it is shown that sets from the new family of sequences have superior qualities. Tables of parameters for various sequence sets are presented to enable the construction and comparison of sets from this new family
Keywords :
code division multiple access; correlation theory; digital communication; pseudonoise codes; random processes; sequences; spread spectrum communication; CDMA; auto-correlation functions; coded multiple access communication systems; complex spreading sequences; correlation properties; cross-correlation functions; digital communication; pseudo-random sequences; sequence sets; Autocorrelation; Bandwidth; Bit error rate; Channel capacity; Communication systems; Degradation; Frequency; Multiaccess communication; Multiple access interference; Spread spectrum communication;
Journal_Title :
Communications, IEEE Transactions on
