Download Details - Space Applications Centre

भारत सरकार
अंत र
अंत र
Government of India
वभाग
Department of Space
उपयोग क (इसरो)
SPACE APPLICATIONS CENTRE (ISRO)
Ambawadi Vistar P.O.
आंबावाडी व तार पी.ओ.
Ahmedabad – 380 015 (INDIA)
अहमदाबाद – 380 015 (भारत)
Telephone : +91-79 – 2691 3051/98
दूरभाषः +91-79-2691 3051/98
Fax No. : +91-79 – 2691 5835 / 02 /48
फै स नं. : +91-79-2691 5835/02/48
Email: [email protected]
Date: 28-03-2016
ईओआई सू चना सं.: सैक / ईओआई /09/ 2015-16
EOI Notice No.: SAC / EOI/09/ 2015-16
प त के लए और उनक ओर से, व र. धान,
य एवं भंडार,अंत र
उपयोग
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भारत के रा
क , अहमदाबाद, न न ल खत के लए इ छुक भारतीय व े ता से अ भ च क अ भ यि त
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(ईओआई) आमं त करते ह।
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For and on behalf of the President of India, Sr. Head, Purchase & Stores, Space
Applications Centre, Ahmedabad invites Expression of Interest (EOI) from interested
Indian vendors for the following.
नयत त थ (अपरा न 3 बजे तक)
Due Date (Up to 3:00 pm)
Development of Satellite Mobile Radio(SMR) Terminal
18-04-2016
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सं
त ववरण
Brief Description
कृ पया अपने व तृत
यु तर मोहरबंद लफाफे म नयत त थ 18-04-2016 (15.00 Hrs. IST)
तक या इससे पू व अधोह ता र को भेज।
Please submit detailed response to the undersigned on or before due date 18-04-2016
(15.00 Hrs. IST) in sealed cover.
व र. धान, य एवं भंडार
Sr. Head, Purchase & Stores
Request for Expression of Interest
Introduction:
Space Applications Centre, Ahmedabad has developed and demonstrated
Satellite Mobile Radio terminal, A S-band terminal for two-way low bit rate voice
communication application using high power MSS satellite. The terminal has
been well received by different proposed user agencies in terms of functionality.
This Request for Expression of Interest (REoI) is published to invite technology
partnership from different technically competent vendors and to explore
different options for realizing the terminal in ruggedized and miniaturized form
factor for ease of use and better field usage.
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Satellite Mobile Radio is a terminal to support two-way voice & data
communications services. The terminal is envisaged to be handheld and battery
operated. The terminal also supports limited mobility up to a speed of 120
Kmph. The salient features of the already developed terminal include:
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Features
 S-band hand-held lightweight miniaturized satellite terminal with built-in
GPS
 Supports 2.4kbps voice compression and 2.7kbps transmission rate for
two-way voice communication
 Supports small message communication
 Weight < 1000gm
Applications
 Two-way voice communication
 Small message communication
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Purpose of REoI
This REoI is for inviting technical proposal from different vendors with their
innovative tools & technology to realize the Satellite Mobile Radio terminal as
per the technical specifications given below in this document. The proposed
solution should also include the roadmap for implementation and improvements
possible in future with detailed technical analysis to strengthen the realization
roadmap.
Specifications of Satellite Mobile Radio Terminal:
Sr. No.
1.
2.
3.
4.
5.
6.
Parameter
Rx Frequency band
Tx Frequency band
G/T
EIRP of the Terminal
Transmit Power Amplifier
Modulation and Coding
Specification
2.56-2.59 GHz
2.67-2.68 GHz
-23 dB/K minimum
0 dBW (Min)
1W ( Min. needed to meet EIRP)
QPSK with FEC Rate ½, K=7,
Convolution coding
1
7.
Channel Access Scheme
Forward
signaling
communication channel
G1=133; G2=171 (IESS 308/309)
Differential Encoding CCITT V.35 or
Better
SCPC - DAMA
& TDM (Programmable from 19.2 Kbps
to 512 Kbps with steps of 2.4 Kbps)
Random ALOHA / SCPC at 2.7 Kbps
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15.
16.
17.
18.
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12.
13.
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9.
10.
11.
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8.
Return
signaling
&
communication channel
Modulation Parameter
Phase Imbalance
< 3.0 deg.
Amplitude Imbalance
< ± 0.2 dB
Voice Compression Rate
2400 bps
Channel Transmission Rate
2700 bps
Source Coding
AMBE or any other soft codec which
provides MOS quality better than 3 at
2.4 Kbps voice compression rate
(Soft codec is preferable option)
Security/Encryption
AES-256 or better may be proposed
Size
Preferably similar to 5 inch Android
smart phone with thickness less than
20 mm or better
Weight
< 500 gm
Power Consumption
Talk Time:
: 2 Hrs. minimum
Standby Time:
: 24 Hrs. minimum
End Use of Terminal
Supports two way voice and small
message communication
Temperature
-10C to 60C
Humidity
95% RH at 40C
Interface
3.5mm Audio Jack, USB Interface, WiFi (Preferable), Touch Screen
Table 1: Specifications of Satellite Mobile Radio
System Description:
The proposed system is envisaged to offer voice communication & small
messaging services using handheld battery operated terminal. The terminal
should be able to make call over any other similar terminal in the network or to
any phone in PSTN network or GSM network through the voice gateway at HUB.
The proposed S-band transceiver terminal will work in star network
configuration and will connect to outside world or any other network at HUB
through gateway to be designed based on selected network protocol.
In the present solution it is proposed to have forward signaling and
communication channel as a high bit rate link programmable from 19.2 Kbps to
512 Kbps. The forward link will carry the combined information for multiple
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terminals on a single channel/carrier. The return communication channel will be
working as continuous 2.7 kbps link. The signaling channel will be working in
Aloha mode at 2.7 kbps.
Network Configuration:
MSS
Hub
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The proposed network block diagram is shown below:
Fig- Network Configuration
The network is proposed to work in start network configuration. The network
will be configured to support the forward link of 19.2 Kbps onward and return
link of 2.7 kbps with the proposed terminal EIRP & G/T figures.
The HUB will have the L-band modem with IP interface. The received data will be
available through IP interface to connect to voice gateway for connecting to
external networks.
Proposed Technology Improvements:
SAC team proposes the following technological improvements to be addressed in
this proposal.
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1. Present terminal used patch antenna of 50 mm x 50 mm size with beam
width of ±45 deg. Vendors may propose better technology for facilitating
miniaturization and improved coverage. It is anticipated that a coverage
of ±60 deg. Will provide ease of operations.
2. The forward communication channel to be high data rate with improved
channel coding as specified in the document. Vendors have to come up
with the efficient network management and signaling protocol for
network operations.
3. The channel coding in the forward link should be improved from QPSK
rate ½ FEC to either TPC or small block LDPC to better coding gain at
least by 2 dB. (present coding gain is 5.5 dB and BER of 1e-6 is achieved at
5.5 dB Eb/N0. We expect this to be achieved at 3.0 dB with new channel
coding scheme.)
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4. The terminal baseband should support touch screen keypad and
LCD/LED display with user interface similar to available smart phones for
better user experience.
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5. The terminal RF front end may be designed in such a way that it acts as a
sleeve to any available Android Phone or could also be used as satellite
phone with additional baseband card.
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6. Baseband implementation may be targeted in such a way that it also
supports Android OS, if needed.
Scope of Development:
The scope of development for REoI must include following:
Development of miniaturized terminal as per specification and details
given in document. The terminal development proposal may have two
types specified separately, one as satellite phone and another as sleeve to
available android phone.

Development of Voice Gateway Unit for connecting to PSTN or GSM
network from satellite network. This is to facilitate use of soft codec with
good MOS at lower bit rate as specified in this document.

Since forward link is proposed with improved channel coding either using
TPC or short block LDPC, an L-band modulator for HUB with all technical
details in source form is part of deliverables to ensure interoperatibility.

NMS for controlling the resource allocation for forward link and to
support voice routing to Satellite Terminal or GSM or PSTN network. The
NMS design should at least be able to cater to 50 voice carriers
simultaneously.

The battery and packaging should be light weight. Use of available
suitable battery packs for smart phones should be considered.
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
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List of Deliverables:
Following are the list of deliverables and must be quoted separately:
Sub-System
Qty.
1.
Satellite Mobile Radio Terminal
25
2.
Voice Gateway Unit ( 8 Channels)
02
3.
Network Management Software with Server Machine
01
4.
L-band Modulator
01
5.
CD containing design details, source code for NMS,
firmware, User Manual etc.
01
Terms & Condition:
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Sl. No.
This REoI is to explore and facilitate terminal & hub technology
upgradation through Industry. SAC invites proposal from all vendors to
realize the terminal and services as described in the document.

After evaluation of all technical proposals and their feasibility of
implementation, SAC will issue RFP to all the technically competent
bidders for the technology implementation based on assessment of REoI
by technical team at SAC. Thus all the design details during development
will be part of deliverables in source form to SAC and SAC will reserve the
right of using this technology for its future projects.

SAC will facilitate testing of this technology through its available ground
infrastructure. Once proven in the network, SAC may decide to offer the
technology to multiple vendors for better time to market.

The vendor has to quote the one-time development cost and terminal cost
separately. The different component of NRE should be brought out
clearly. Any development elements which may be treated as optional for
the project should be quoted separately.

The vendor has to submit the quote for slab quantity of terminals for
future procurement in slabs of 1-100, 101- 999, 1K-10K and 10K+.

Since the terminal envisaged to have low weight and user friendly
package, all necessary useful accessories like headphone, charger etc.
should be part of deliverables. Vendors are encouraged to explore better
appealing and user friendly packaging.
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SAC team may invite vendors for one to one technical discussion about
the proposed design and realization plan. Vendors must indicate their
willingness to participate in this discussion in writing.
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