US Army, CECOM Acquisition Center, Ft. Monmouth, New Jersey 07703-5008

58 -- BANDWITH-EFFICIENT-MODULATION MODEM SOL NA DUE 062097 POC Point of Contact -- Johnny Ng, 908-532-9782 x5423 E-MAIL: Bandwith-Efficient-Modulation Modem, ngj@doim6.monmouth.army.mil. This is a market survey to locate potential sources of supply for Commercial off-the-Shelf (COTS) modem equipment with Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Offset Quadrature Phase Shift Keying (OQPSK), and 8-ary Phase Shift Keying (8PSK) modulation and demodulation capabilities. The modem will be used to support wideband users of the Defense Satellite Communications System (DSCS). The BPSK, QPSK, and OQPSK capabilities must be compatible with the OM-73 Modem Group and be supported by selectable rate 1/2, 3/4, and 7/8 Forward Error Correction coding (FEC) formats. The QPSK capability must also be compatible with Intelsat Earth Station Standard (IESS) -308 FEC formats at selectable rates of 1/2, 3/4, and 7/8. The BPSK, QPSK, and OQPSK capabilities must support data rates selectable from 16 kbps to 10.0 Mbps in 1 bps increments. The 8PSK capability will be in accordance with IESS-310, Paragraph 10.2, and it must be supported by rate 2/3 pragmatic trellis and inner rate 5/6 FEC formats. The 8PSK capability must operate at data rates from 256 kbps to 10.0 Mbps in 1 bps increments. In addition, the 8PSK capability must support all rates in the ITU-T G.703 hierarchy from T1 (1.544 Mbps) to T3 (44,736 Mbps). Modem performance in all four modulation formats must be compliant with applicable portions of MIL-STD-188-164, MIL-STD-188-165 and Defense Satellite Communications System (DSCS) Earth Terminal Certification Requirements (DISA, 1 July 1996). The modem shall mount in a standard 19-inch rack. The receive/demodulator function requires the support of a doppler buffer operating over the full range of specified data rates. Modem baseband interfaces must be compatible with the IDNX, TD-1337, and similar baseband equipment used in the DSCS Digital Communications Satellite Subsystem (DCSS). Built-in Test Equipment (BITE) is required to allow fault detection and isolation to the LRU/circuit card level without external test equipment. The modem will be installed in a ground fixed environment of a DSCS earth terminal complex and it must be fully compatible with all of the standard DSCS fixed earth terminals. It will be powered from a 115 Vac, 50/60 Hz source and will accept a reference signal from the facility frequency standard. Its Intermediate Frequency (IF) interface will be programmable over the range of 52 to 88 MHz in 2.5 kHz steps. The modem will include a control and monitoring capability which can be accessed by a military operator from either the modem front panel or a remote personal computer or video display terminal via a serial interface. In addition, it must be possible to control the modem via a serial interface to the DSCS FDMA Control Subsystem (DFCS), using the OM-73 control protocols specified in the DCSS FDMA Control System (DFCS) Interface Control Document for the DFCS Network Terminal and OM-73(V)/G Modem Group Modules MD-1195/G Demodulator and C 11640/G Controller (Draft, 2 March 1994). Contractors may be required to provide 2 units, on loan, for pre-contractual testing purposes. The government envisions a future need to procure approximately 400 units over multi years beginning in FY98. Any interested sources with suitable modem equipment must send technical information to include, but not be limited to, detailed product specification, available test data, schedule availability and cost information, NLT 20 June 1997, to Bldg. 209, ATTN: AMSEL-RD-ST-SE-ST (Johnny Ng), Ft Monmouth, NJ 07703. Contractors shall also include information on any open DOD contractual vehicles for the subject equipment, to include GSA schedules. All questions should be addressed to Johnny Ng, (908) 532-9783, x5432. Email address: ngj@doim6.monmouth.army.mil. (0141)

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