The MDM-Q9604HF ModemRod Blocksome

Feb. 3, 2005

TopicsTopics

• Modem OverviewModem Overview• Diversity Performance

V i IP (V IP)• Voice over IP (VoIP)• Serial Control over IP (SCoIP)

MDM-Q9604 ModemOverview

Rockwell CollinsMDM-Q9604HF Modem

Q9604 FeaturesQ9604 Features

• JITC certification for MS-188-110B, App. C & FJITC certification for MS 188 110B, App. C & F• DERA (QuinetiQ) certified for S-4539, Annex B• Wide Selection of Standard & ProprietaryWide Selection of Standard & Proprietary

Waveforms• Data Transmission Rates up to 64 kbps usingData Transmission Rates up to 64 kbps using

4ISB HF or 76.8 kbps using 25 kHz V/UHF Channel

• Compatible with MS-188-141B ALE Radios• Diversity Operationy p

Q9604 Features – contQ9604 Features cont.

• VoIP ModeVoIP Mode• SCoIP Mode• Three Modem Control Methods:Three Modem Control Methods:

– Local; front panel or embedded GUI– Serial control through COM portsg p– Ethernet through sockets

• Software upgradeable from Ethernet portpg p• LINUX operating system• Comprehensive BITp

Waveform SummaryWaveform SummaryMS-110B, App. C 3.2 – 12.8 kbps, pp p

MS-110B, App. F 9.6 – 19.2 kbps

MS 110B 75 4800 bMS-110B 75 – 4800 bps

S-4285 75 – 3600 bps

S-4529 75 – 1800 bps

S-4415 75 bps

S-4481 75 bps

S-4539 75 – 12 800 bpsS-4539 75 – 12,800 bps

Waveform Summary – contWaveform Summary cont.Programmable FSK 50 – 1200 bps

Narrowband Airborne 75 – 8000 bps

Narrowband Maritime 75 – 6400 bps

Very High Data Rate 16 kbps max; 1-Ch32 kbps max. 2-Ch48 kb 3 Ch48 kbps max. 3-Ch64 kbps max. 4-Ch

MS-110B, App. B 75 – 2400 bpsMS 110B, App. B 75 2400 bps

MS-110B Auto-Mode All of MS-110B App. B, C, & F

V/UHF Wa eform 2 4 76 8 kbpsV/UHF Waveform 2.4 – 76.8 kbps

Specification SummarySpecification Summary• Data Interfaces:

– RS-232/422/423 sync/async– MS-188-114 sync/async– Functional digital data Ethernetg

• Remote Control:– RS-232/422/423/485

Ethernet– Ethernet• Embedded Control

– Front PanelLi X Wi d GUI– Linux X-Windows GUI

• Single Ethernet Connection for data & control (separate sockets)

Specification Summary – contSpecification Summary cont.• Receive & Transmit Audio: 600-ohm balanced; ;

Adjustable Tx levels• Radio Keyline: dry contact, open collector, & 6-volt with

h di h leach audio channel• Prime Power: 85 – 265 Vac, 47 – 440 Hz• Size: 1 75 x 19 x 16 inches• Size: 1.75 x 19 x 16 inches• Weight: 8.6 lbs

Diversity PerformanceDiversity Performance

Types of DiversityTypes of Diversity

• Frequency DiversityFrequency Diversity– Transmit same information on more than one

Frequency or Channel• Polarization Diversity

– Receive same channel on two separate antennas: ti l & th h i t lone vertical & other horizontal

– Not applicable for LOS and surface wave propagation• Space Diversity• Space Diversity

– Receive diversity with antennas separated spatially

Types of Diversity – contTypes of Diversity cont.• Time Diversityy

– Transmit time delayed data on separate channel• Transmit Diversity

– Same data on multiple channels• Diversity provides link improvements provided

the diversity channels have uncorrelatedthe diversity channels have uncorrelatednoise/fading/interference characteristics

Receive Diversity PerformanceReceive Diversity Performance

• Q9604 has 4 audio channels to provide:Q9604 has 4 audio channels to provide:– Up to four channel diversity for single channel

waveformswaveforms– Dual Channel diversity with MS-188-110B

App. F waveformApp. F waveform• Diversity performance evaluated using

baseband channel simulatorsbaseband channel simulators

Q9604 Q9604MDM-3001MDM 3001

Tx Audio Rx Audio

Q9604Modem

Q9604Modem

MDM-3001MDM-3001MDM-3001

Ch l Si l tChannel SimulatorsTx Data

Rx DataDataAnalyzer

Rx Data

Fireberd 6000A

Test Set-up Block DiagramTest Set up Block Diagram

CCIR Channel DefinitionsCCIR Channel Definitions

CCIR Channel Doppler Multi-pathCCIR Channel Doppler Spread(fade rate)

Multi path differential delay( )

POOR 1 Hz 2.0 msec

MODERATE 0.5 Hz 1.0 msec

GOOD 0.1 Hz 0.5 msec

2-Ch Diversity Performance; CCIR Poor

1 E 00

1.E-01

1.E+00

1.E-03

1.E-02

r Rat

e

1.E-05

1.E-04

Bit

Erro

r

1.E-07

1.E-06

1.E-080 5 10 15 20 25 30 35 40

Signal-to-Noise Ratio dB

9.6/Div 8.0/Div 6.4/Div 9.6 8 6.4

2-Ch Diversity Preformance; CCIR Moderate

1 E 00

1.E-01

1.E+00

1.E-03

1.E-02

r Rat

e

1.E-05

1.E-04

Bit

Erro

r

1.E-07

1.E-06

1.E-080 5 10 15 20 25 30 35

Signal-to-Noise Ratio

9.6 9.6/Div 8.0 8.0/Div 6.4

2-Ch Diversity Performance; CCIR Good

1 E 00

1.E-01

1.E+00

1.E-03

1.E-02

r Rat

e

1.E-05

1.E-04

Bit

Erro

r

1.E-07

1.E-06

1.E-080 5 10 15 20 25 30 35 40

Signal-to-Noise Ratio dB

9.6 9.6/Div 8.0 8.0/Div 6.4 6.4/Div

Diversity (2 Channels)Diversity (2 Channels)

• CCIR PoorCCIR Poor– 5 to 7 dB improvement for 4.8 to 9.6 kbps

CCIR Moderate• CCIR Moderate– 7 to 8 dB improvement for 4.8 to 9.6 kbps

• CCIR Good– 8 to 10 dB improvement for 4.8 to 9.6 kbps

4-Ch Diversity Performance; 9600 bps

1 E 00

1.E-01

1.E+00

1.E-03

1.E-02

r Rat

e

1.E-05

1.E-04

Bit

Erro

r

1.E-07

1.E-06

1.E-080 5 10 15 20 25 30 35 40

Signal-to-Noise Ratio dB

Poor/Div Poor Mod/Div Mod Good/Div Good

Diversity (4 Channels)Diversity (4 Channels)

• CCIR PoorCCIR Poor– 10 to 12 dB improvement for 9.6 kbps

At 15 dB SNR BER < 10-3 for 9 6 kbps– At 15 dB SNR, BER < 10 3 for 9.6 kbps• CCIR Moderate

f– 15 to 17 dB improvement for 9.6 kbps• CCIR Good

– 14 to 15 dB improvement for 9.6 kbps

Diversity Perf; MS-188-110 B, App F; 19.2 kbps

1 E 00

1.E-01

1.E+00

1.E-03

1.E-02

r Rat

e

1.E-05

1.E-04

Bit

Erro

r

1.E-07

1.E-06

1.E-080 5 10 15 20 25 30 35 40

Signal-to-Noise Ratio dB

Poor Poor/Div Mod Mod/Div Good Good/Div

Diversity MS-188-110B App FDiversity MS 188 110B App. F

• CCIR PoorCCIR Poor– 6 to 9 dB improvement for 9.6 to 19.2 kbps

CCIR Moderate• CCIR Moderate– 5 to 9 dB improvement for 9.6 to 19.2 kbps

• CCIR Good– 7 to 10 dB improvement for 9.6 to 19.2 kbps

• Channel diversity should allow 19.2 kbps with 20 dB SNR HF link

Voice over IPandand

Serial Control over IP

Why VoIP and SCoIP?Why VoIP and SCoIP?

• Reduction in operating costs for remoteReduction in operating costs for remote controlled HF Ground Stations

• Currently multiple phone line channelsCurrently multiple phone line channels used between operators and radio sites

• Replace with WAN/LAN running IP dataReplace with WAN/LAN running IP data– VoIP for analog audio e.g. voice traffic– SCoIP for equipment control/monitoring e.g. SCo o equ p e t co t o / o to g e g

radios, modems, antenna switching/rotation, etc.

Control Site Receiver Site(10 R i )

Tx Audio (10)

Rx Audio (10)

(10 Receivers)Control (2)

TTx Audio (1

Control (Typical Split-Site HF Station: 10)

1)Typical Split Site HF Station:

• 30 Phone line channels for audio• 3 Phone line channels for control

Transmitter Site(10 Transmitters)

3 Phone line channels for control

Control Site Receiver Site(10 R i )(10 Receivers)

LAN/WAN

Typical Split-Site HF Station:Transmitter Site(10 Transmitters)

yp p

• All Audio on VoIP• All Control via SCoIP

Q9604 VoIP FunctionQ9604 VoIP Function

• Allows voice to use an IP Network as the transport channel between a radio operator and a remote radio while maintaining the ability of the “modem” to function as a modem

• Provides ability to control the “PTT” or keyline of the remote radio• Q9604 provides keyline input for PTT devices, and supports VOX

thresholds as a keying mechanism• Based upon standard protocols for compatibility with COTS VoIP p p p y

clients; minor VoIP COTS client modifications likely needed to support HF or VHUF radio systems

• Two CODECS: 32 kbps ADPCM and 32 kbps µLawp p µ• Q9604 VoIP mode features several configurable parameters for

adapting to congested IP networks• Supports split-site ALE systemsSupports split site ALE systems

Q9604 SCoIP (Serial Control over IP)Q9604 SCoIP (Serial Control over IP)

• Enables control of remote serial devices over IP links• The controller’s serial cable is connected to the base station

Q9604’s AUX port• The Q9604 SCoIP menu acquires the IP address of the remote Q q

Q9604 modem; a common port number is then configured on both the base and remote Q9604 modems, serving as the control socket

• The remote station Q9604 modem interfaces with the serially Q ycontrolled device, via the modem’s COM port

• Q9604 SCoIP function is independent of the modem function. Waveform data and control packet messages are exchanged p g gthrough a single common IP link, to the modem’s data and control sockets

IP Voice and Serial Control DataRTP St I t tRTP Stream Interconnect

AudioControl • Single Radio remotely operated/managed by a single

ConsolePCRS-232ControlData

PushToTalk

TX/RXAudio2 Channels

operated/managed by a single workstation

– Transceiver supports 2 ISB Channels (Audio)

– Operator console consists of an audio interface panel and a pc/laptop

MDM-Q9604

p p p p– Control Software only needs to provide

serial control of transceiver

MDM-Q9604

RS-232C t l

PushT

TX/RXAudio

• 4 RTP Streams– Audio Channel # 1

Audio Channel # 2

Transceiver

ControlData

ToTalk

Audio2 Channels

– Audio Channel # 2– Push-to-Talk (Radio key line)

• Possibly combined with Audio channel #1

– RS-232 Serial Control Data

IP Voice and Serial Control DataRTP Stream InterconnectRTP Stream Interconnect9604 in Split-Site mode

AudioControl • Split Site Configuration remotely operated/managed by a single workstationConsolePC

RS-232ControlData

PushToTalk

TX/RXAudio2 Channels

single workstation– Transmitter and Receiver each support 2 ISB Channels (Audio)– Operator console consists of an audio interface panel and a

pc/laptop– Control Software could be any application capable of split site

serial control

MDM-Q9604– Operator workstation MDM-Q9604 splits audio, transmit audio

goes to transmit site, receive audio goes to receive site– RS-232 control and push-to-talk is also “passed” to both

transmit site and receive site simultaneously

MDM-Q9604

RS-232C t l

Mute RXAudioMDM-Q9604

Receiver

ControlData

Audio2 Channels

RS-232ControlData

PushToTalk

TXAudio2 Channels

Transmitter

ReceiverReceiverSite

TransmitterSite

ControlSite A

SiteSiteSite

TransmitterSite

TransmitterSite

LAN/WAN

ReceiverSite

Receiver

Site

Expansion to:

ReceiverSite

TransmitterSiteExpansion to:

Multi-User/ControlMulti-Station ControlControl

Site CSite B

The End