- HOME >
- Products >
- Communication Tools
PN Canceller is a tool to effectively utilize frequency and resources of base station and central terminal. It improves link quality through wireless relay system located between wireless interface of base station and central terminal among wireless mobile communication environment with W-CDMA method.
The most significant trait is that it does not just amplify the signals transmitted from stations, but distinguishes PN code of each station and eliminates unwanted stations pilot signals, the core signals for distinction of station.
< Concept of PN Canceller >
-
Digital IF
- Separation of I and Q channel from alanog radio signal received by antenna
- Convertion to digital signal
- Cell Searching
- Slot Synchronization : P-SCH search
- Frame Synchronization : S-SCH search
- CPICH searching : Pertinent station CPICH search
- Tracking : Tracing received pilot time period
- Channel Estimation : Estimation of received pilot benefit
- CPICH PN ID Generation
- Formation of virtual relative PN lists
- Analysis on received pilot
- CPICH PN Generation
- Formation of base station PN
- Pulse Shaping
- Formation of base station pilot signal
- Cancellation ratio and profit regulation
- AFC
- Regulation of the timing of AFC base station and relay tools
- Betterment of receptor performance of relay area terminal
- RF relay
- Signal relay between Node-B of WCDMA network and UE
NO | ITEM | Specification |
---|---|---|
1 | Frequency Range | 2,150MHz ~ 2,170MHz |
2 | Maximum System Gain | 70dB 2dB (40~70dB) |
3 | Frequency Stability | 227Hz |
4 | Maximum Output Power | +10dBm / total (+20% ~ -50%) |
5 | Maximum Input Power | -35dBm/Total 2dB |
6 | Error Vector Magnitude | Below 12.5 % (@ Maximum Power) |
7 | Peak Code Domain Error | Below -35 dB (SF=256) |
8 | System Group Delay | Within 8us |
9 | Maximum FA | 4 FA |
10 | PN Eliminating Capacity | Above 20dB |
11 | PN Elimination number (including multi-path) | 4PN / 1FA |
12 | PN Selection Method | Auto / Manual |
13 | PN Selection Standard | RSCP standard |