Title :
Performance of the non-coherent DLL in multiple access interference
Author :
Caffery, James, Jr. ; Stüber, Gordon L.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
The performance of a non-coherent delay-locked loop (DLL) in the presence of multiple-access interference (MAI) is presented. The effect of the MAI on performance is evaluated in terms of two performance criteria: the mean-time-to-loss-lock (MTLL) and the root-mean-square (rms) tracking error. It is shown that the performance of the non-coherent DLL is drastically effected as the number of users in a system is increased. The effect of the near-far ratio, PN code sequence length, and loop signal-to-noise ratio (SNR) on the DLL´s performance in MAI are also examined
Keywords :
delay lock loops; interference (signal); multi-access systems; pseudonoise codes; tracking; MAI; MTLL; PN code sequence length; loop signal-to-noise ratio; mean-time-to-loss-lock; multiple access interference; near-far ratio; noncoherent DLL; noncoherent delay-locked loop; performance; rms tracking error; root-mean-square tracking error; Delay estimation; Gaussian noise; Modulation coding; Multiaccess communication; Multiple access interference; Performance analysis; Signal to noise ratio; Spread spectrum communication; Statistical analysis; Tracking loops;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
DOI :
10.1109/ISSSTA.1998.722493
