1. General Description

GENERAL DESCRIPTION 1

Pasolink+ XPIC Training Course.

GENERAL DESCRIPTION

CHAPTER 01


1. INTRODUCTION

NEC's Pasolink+ XPIC can operates in frequency bands from (6 – 38) GHZ.

NEC’s Pasolink+ XPIC supports the following transmission capacity:-

SDH 2 x STM-1 optical / electrical interfaces.

Optional 2 × 10/100 Base-T(X) LAN signal.

NEC’s Pasolink+ XPIC uses 128 QAM + RS modulation technique.

The following table shows a summary comparison for Pasolink family.


PASOLINK FAMILY

4/6GHz7/8GHz11GHz13GHz15GHz18GHz23GHz26GHz38GHz

SERIES/MODELSYSTEMMODULATIONINTERFACE3.6-7.17.1-8.510.7-11.7

12.7-13.2

14.2-15.3

17.7-19.7

21.2-23.6

24.2-2737-40

PASOLINK V3PDH4PSK2x2MB

4x2MB

8x2MB

16x2MB

1x8MB

1x34MB

PASOLINK V4PDH4PSK2x2MB

4x2MB

8x2MB

16x2MB

2x10/100Base-T

PASOLINK MXPDH4PSK/16QAM

Selectable

5,10,20,40x2MB

2x10/100Base-T

PASOLINK+

PDH16QAM + RS8x2MB

16x2MB

SDH

(STM-0)32QAM+RS21x2MB

(STM-1)

SDH

(STM-1)32 QAM +RSSTM-1

SDH

(STM-1)128QAM+RSSTM-1

SDH

(2xSTM-1)128QAM+RSSTM-1

(XPIC )2x10/100Base-T


2. EQUIPEMENT FEATURES (1/8)

1. ADVANCED TECHNOLOGIES AND SUPERB PERFORMANCE

• MMIC, HIC AND VLSI

• Single chip modulator/ demodulator (Full digital)

• Square-root Nyquist Roll-off shaping filter

• High reliability

• Low power consumption

2. HIGH TRANSMISSION CAPACITY

• 2 x 155 MB transmission capacity is realized by XPIC (Cross Polarization Interference Canceller) technology.

3. MITIGATION OF INTERFERENCE

• Possible interference caused by co-channel transmission is mitigated with orthogonal polarized input channel and the XPIC (Cross Polarization Interference Canceller) device.

4. HIGH SYSTEM GAIN

• High system gain achieved by using 128 QAM + RS modulation techniques.


5. EASY AND QUICK INSTALLATION

• Very compact and light

• Only one coaxial cable interconnection

• Different mounting methods for IDU, ODU and Antenna

• Easy antenna pointing adjustments (RX level monitor point in ODU)

6. SYSTEM FLEXIBILITY

• Hot Standby/ Space Diversity / Twin Path systems are available with Hitless switch.

• Common IDU for different RF frequencies (6/7/8/11/13/15/18/23/26//38 GHz)

• (1 + 0 ) unprotected or ( 1+ 1) protected.


7. FREQUENCY AGILITY AND EASY TUNING

• Field tunable local-oscillator (Synthesizer).

• RF point frequency can be changed in the field, (except 6 – 8 GHz).

• Frequency Tunable without changing RF FIL on Sub-band basis (except 6 – 8 GHz).


8. TX POWER CONTROL

• Variable : 0 to 20 dB , 1 dB step variable.

• Automatic Transmit Power Control (ATPC) or Manual Transmit Power Control (MTPC)

9. EASY MAINTENANCE FACILITIES

• Full front panel access for all cabling and user interfaces

• Near End and Far End Base-band Loop back facilities

• Remote monitoring of ODU operating condition from IDU

• OW calling facility between IDU - ODU, IDU – IDU and ODU-ODU

• Local monitor and maintenance using Local Craft Terminal (LCT)

• Continuous RSL monitoring using Local Craft Terminal (LCT)

• Pre-settable BER alarm point.


• IF Loop back facility.


10. MULTIPLE SERVICE CHANNELS

• Engineering Order Wire (OW) : IDU- IDU (Standard) IDU - ODU (In case using “PASOLINK MONITOR” (Option)) ODU-ODU (In case using “PASOLINK MONITOR” (Option))

• Service channels : - Digital Port : 64 kbps Sync., 2 ch standard.

VF Port : 0.3 to 3.4 kHz (1 ch) 600 ohms, 2 ch standard.

10 Base-T : 1 ch (optional; exclusive use in other service channels).

Cluster Alarm : 2 ch (optional; auxiliary alarm transmission).

• The system configuration is easily updated :-

1 x STM-1 (1+0) to 2 x STM-1 (1+0).

1 x STM-1 (1+0) to 2 x STM-1 (1+1 with hot standby).

1 x STM-1 (1+0) to 2 x STM-1 (1+1 with twin path).

11. COMMON PLATFORM ARCHITECURE.



• Complies with ETS 300385

15. ELECTRO MAGNETIC COMPATIBILITY (EMC)

14. CONFORMITY WITH ANSI, ITU-R, ITU-T AND ETSI STANDARDS


• NEC Quality control is carefully monitored in every manufacturing step, such as parts selection, assembly, adjustment and testing.

• NEC Quality Controls employing Zero Defect and Value Engineering Techniques extend to every aspect of production and inspection in accordance with stringent Total Quality Control programs.

12. RELIABILITY AND QUALITY

• User friendly operation as maintenance terminal.

13. PASOLINK NETWORK MANAGEMENT TERMINAL (PNMT) (OPTION)

• Link oriented monitor and control.

• Uses Windows 2000/XP which enable use of mobile PC


16. PASOLINK NETWORK MANAGEMENT SYSTEM (PNMS) (OPTION)

• User friendly operation

• Uses Windows 2000/XP to ensure easy operation and maintainability

• Remote access and control of any PASOLINK Terminal in the network

• Link oriented monitor and control ( both side of a microwave link)

• Multi level security

• Event Logging

• ITU-T G.826 Performance Monitor (Table /graph presentation)

• Real-time monitor of Network Elements (NE)

• SNMP Interface (Option)



17. Flexible ODU Mounting Configurations.


Suitable configuration can be selected from various ODU mounting styles.

1. Direct Mounting on Antenna.

2. Remote Mounting with Waveguide or Coaxial Cable.

2. 11-38 GHz Remote Mount Dual Pole System1. 6-8 GHz Remote Mount Dual Pole System


17. Flexible ODU Mounting Configurations (Cont.)


3. 11-38 GHz Direct Mount Dual Pole System


3. Compatibility


4. System Compositions

The system consists of the following :-

1. MDP-150MB7T-( )A Modulator-Demodulator (Indoor Unit (IDU)).

2. TRP-( )G-1AA Transmitter-Receiver (Outdoor Unit (ODU)).

3. Orthogonal Mode Transducer (OMT) (for antenna direct mounting).

4. Hybrid for 1+1 one antenna configurations.

5. Antenna for required MW band.

6. IF Cable.

7. RF Cables for ODU Remote mounting.


5. IDU Composition for 1+0


6. IDU Composition for 1+1


7. IDU Performance Characteristics (1/3)


7. IDU Performance Characteristics (2/3)


7. IDU Performance Characteristics (Cont.) (3/3)


8. ODU Indication Label


9. ODU Composition for (6/7/8 GHz)


10. ODU Composition for (11/13/15 GHz)


10. ODU Composition for (18/23/26/38 GHz)


11. ODU Performance Characteristics.


12. OMT (Ortho Mode Transducer). (1/3)

OMT Transducer

1. NEC has developed the Ortho-Mode Transducer (OMT) over the full range of microwave frequencies for Wave Guide interface of PASOLINK Series digital microwave radio point-to point fixed wireless systems.

2. 3. The OMT comprises the Ortho-Mode transducer, antenna

interface and radio mounting interfaces.

4. The two independent RF signals received by dual polarized antenna are separated and sent to two outdoor units (ODUs) through the OMT for 2+0 systems.

5. The OMT enables the dual polarization feature to double the transmission capacity for the PASOLINK system.

6. The NEC OMT has a Wave Guide connection type for 13-38GHz Bands, which is suited for RFS Antenna and all NEC ODUs.

Features

1. Direct mount integration with smart design for PASOLINK Series

2. Easy Installation

3. High XPD (cross polar discrimination ratio)


12. OMT (Ortho-Mode Transducer) (Cont.) (2/3)

OMT Physical Dimensions


12. OMT (Ortho-Mode Transducer) (Cont.) (3/3)

OMT Specifications


13. Hybrid Combiner / Divider. (1/4)

6/7/8 GHz Hybrid 13 – 38 GHz Hybrid

NEC has developed the Hybrid Combiner/Divider over the full range of microwave frequencies for the PASOLINK Series digital microwave radio point-to-point fixed wireless systems.

This Hybrid Combiner/Divider comprises a directional coupler, antenna interface, radio mounting interfaces and polarizer.

The RF signal power received by the single polarized antenna is equally distributed and sent to two outdoor units through the Hybrid Combiner/Divider for 1+1 protected systems.

There are two types of NEC Hybrid Combiner/Divider, one is a coaxial cable connection type for 6/7/8GHz Bands and the other is WG connection type for 13-38GHz Bands.

NEC Hybrid Combiner/Divider is suited for Andrew, RFS, or PAL Antenna, and all NEC ODUs.


13. Hybrid Combiner / Divider. (Cont.) (2/4)

7/8 GHz Hybrid Physical Dimensions



13 - 38 GHz Hybrid Physical Dimensions



13 - 38 GHz Hybrid Specifications


14. Pasolink Antenna menu and performance for direct mount types.

Note 1: 18-38GHz antennas are provided with standard waveguide flange (PBR) and PASOLINK original interface.(13-15GHz antennas are provided with PASOLINK original interface and without standard waveguide flange.)

Note 2: In case of 7,8,13 and 15GHz remote mount configuration, please don’t use this table.(Please refer to the standard catalog of the antenna supplier).

Note 3: This table shows typical values for reference.

Note 4: In case of Dual Pole Direct Mount Antenna System, * marked Diameters are available.


15. General Performance Characteristics. (1/2)


15. General Performance Characteristics (Cont.) (2/2)

Documents

1. General Description