Open AccessPilot‐aided estimation and equalisation of a Radio‐over‐Fibre system in Wideband Code Division Multiple Access
Author(s) -
Baghersalimi Gholamreza,
O'Farrell Timothy
Publication year - 2013
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2012.0660
Subject(s) - wideband , computer science , division (mathematics) , code (set theory) , code division multiple access , telecommunications , estimation , electronic engineering , mathematics , arithmetic , engineering , set (abstract data type) , programming language , systems engineering
In this study, the impact of a Radio‐over‐Fibre (RoF) subsystem on the capacity performance of wideband code division multiple access is evaluated. This study investigates the use of pilot‐aided channel estimation to compensate for the optical subsystem non‐linearities for different channel conditions, estimation intervals and coding schemes. The results show that pilot‐aided channel estimation is an effective method for compensating the composite impairments of the optical subsystem and the radio frequency (RF) channel. It is found that there is always a suitable pilot power level which maximises the system capacity performance regardless of coding scheme and channel condition. Also, the peak capacity is only slightly affected by a decrease in the estimation interval.