]].
==Research activity Activity (Non Patent) over the years(1991-2003)==
NOTE: The analysis presented below is with respect to the IEEE Papers published between 1991-2003 which focus on the aspect of Quality of Service and its Management using various paramters like Rate matching, Power control, Variable Spreading Factor etc.
[[Image:Publication_Year.JPG|center|thumb|500 px|Number of publications VS Year of publication]]
The above analysis suggests that Research Activity in increased activity in the area of QoS Management in the year 1999.
[[Image:Publishers.JPG|center|thumb|500 px|Publisher VS number of publications during(1991-2003)]]
It is to be noted that the non patent research is attributed mostly to universities in USA and Asia Pacific. The mention of '''IEEE member''' in the above graph indicates the absence of information about the belonging department of the Researcher.
[[Image:CDMA_-_3D.JPG|center|thumb|500 px|Graph showing number of publications by the publishers during 1991-2003]]
==Conclusion==
Substantial amount of research has been done in the field of QoS in CDMA communication system in the year 1998-99 and this has led to the invention of multitude of methodologies ranging from power control to Rate matching and Dynamic Resource scheduling, all with the sole aim of improving QoS.