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

58 -- DEFENSE COMMUNICATIONS SATLLITE SYBSYSTEM (DCSS)BANDWIDTH EFFICIENT MODULATION (BEM) MODEM SOL NA DUE 101698 POC Point of Contact -- Mr. Johnny Ng, 908-532-9783, ext 5432. E-MAIL: Click here to email the POC, 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), 8-ary Phase Shift Keying (8PSK), and 16 (Quadrature Amplitude Modulation) QAM 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 8.472 Mbps in 1 bps increments. The 8PSK capability will be in accordance with IESS-310, Paragraph 10.3, and it must be supported by rate 2/3 pragmatic trellis FEC format. For 16-QAM operation, the modem shall provide FEC formats of rate 3/4 and 7/8 and shall require one of the FEC Reed Solomon encoding methods as described in IESS-310 or in ETS-300-421. Both 8PSK and 16-QAM modes must operate at data rates from 256 kbps to 20 Mbps in 1 bps. Modem performance for BPSK, QPSK, OQPSK, and 8PSK modulation and demodulation formats must be compliant with applicable portions of MIL-STD-188-165 and IESS-310. The government is still developing the 16 QAM performance and sources could provide recommendations. Intermediate Frequency (IF) interface will be programmable over the range of 52 to 88 MHz in 2.5 kHz steps. The modem functions can be implemented in a stand-alone self-contained box or in VME format circuit card mount in a standard 19-inch rack. VME Reliability, Maintainability, and Maintenance (RAM) shall be comparable to stand-alone, self-contained configurations. 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, (i.e., RS-422) 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 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. 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. The modem shall also support information transfer in accordance with the SATCOM Defense Information Infrastructure (DII) Management andControl Modem Management Information Base (MIB) [DISA, 22 March 1996, Rev 1] using Simple Network Management Protocol (SNMP) version 2 for those parameters that are included in the DII MIB. 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). There are also optional modem features for future upgrade. These features include 32-QAM and 64-QAM, which would operate at data rates in the ITU-T G.703 hierarchy up to 44.736 Mbps. The response shall address feasibility to upgrade the modem to include these features with minimal impact to the hardware and software baseline. 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, 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 Posted 09/18/98 (D-SN251690). (0261)

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