ayo hitung KPI-nya...

hari ini harus belajar menghitung KPI.
Sebenarnya KPI itu apa sih? ko bingung aku ni..
alhamdulilah aku dapat gambaran dikit..

ternyata KPI itu terdiri dari:
1. CSSR (CALL SETUP SUCCESS RATE)
Definition: Rate of calls going until TCH successful assignment

2. SCR (SUCCESSFULL CALL RATE)
Definition: Rate of calls going until normal release that is not interrupted by SDCCH DROP, neither by assignment failures, and neither by CALL DROP.

3. CALL DROP RATE (CDR)
Definition: Rate of all losses of TCH connections during a call in relation to the number of successful Call Setups

4. HOSR (HAND OVER SUCCESS RATE)
Definition: Successful internal and external outgoing handovers of total number of internal and external outgoing handover attempts

5. PSR (PAGING SUCCESS RATE)
Definition: Rate of successful paging attempts of total number of paging attempts. The formula is based on NSS point of view (based on MSC or LAC)

6. LOCATION UPDATE SUCCESS RATE
Definition: Successful location update attempts of total number of location update attempts. The formula is based on NSS point of view.

7. SDCCH BLOCK RATE
Definition: SDCCH congestion of total number of SDCCH seizure attempts

8. SDCCH DROP RATE
Definition: Dropped SDCCH connections of total number of SDCCH connections without TCH congestion.

9. TCH ASSIGNMENT BLOCK RATE
Definition: Rate of TCH unsuccessful seizures during assignment procedure due to congestion

10. TCH Assignment Failure Rate (exclude blocking)
Definition: Rate of RTCH seizure failed (system + radio) during normal assignment procedure over the total amount of RTCH request for normal assignment procedure

11. EMD (Erlang Minute per Drop)
Definition: Total of Erlang minutes (TCH occupation) in one period measurement per drop call (after TCH Assignment).

12. TCH Availability
Definition: Available TCH of total number of defined TCH

13. RACH Success Rate
Definition : Rate of Successful RACH over the total number of channel required message received

Space-Time Coding

The spectral efficiencies of traditional wireless systems range between 1-5bps/sec/Hz but by using space-time techniques spectral efficiencies of 20-40bps/sec/Hz have been possible. Hence, space-time coding enables an increase in capacity by an order of magnitude. This is the main reason why space-time codes have been included in the standards for the third generation wireless communication systems and ultimately why Space-time Coding will be in great demand by individuals within industry and academia.
The comprehensive understanding of space-time coding is essential in the implementation of 3G, and as the only title currently available, Space-Time Coding will be the standard text for Researchers, telecommunication engineers and network planners, academics and undergraduate/postgraduate students, telecommunications managers and consultants.

download this book
perhatian: waktu download...waiting time account ya...habis itu click download pada page tersebut...met coba aja ya..