Press Release Details

Ensigma, Ltd. Develops Enhanced Full-rate GSM Software on DSP Group's OakDSPCore

Jul 10, 1997

Chepstow U.K., 10 July 1997 -- Ensigma Ltd. announced today the completion of its Enhanced Full-Rate (EFR) GSM implementation for DSP Group's OakDSPCore®. Clifford Parris, head of the coding group at Ensigma, said, "We are one of the first companies to be offering an EFR solution." The company stated that these excellent development tools offer a faster time to market compared to rival DSPs.

"We are pleased to have Ensigma as a developer and software provider for our OakDSPCore," said Irving Gold, vice president of marketing and sales, DSP Core Technology for DSP Group. "Ensigma's EFR solution is a plug and play replacement for the full-rate standard since it includes the channel pre- and post-processing. This should enable OEMs who already have the full-rate solution to bring EFR to the market quickly."

The following tables summarise Ensigma's EFR offering for the OakDSPCore:

Features and Benefits

  • Conforms to OAK C environment
  • Full test harness supplied for OAK simulator
  • Full documentation
  • Includes channel pre/post processing
  • Run time switchable VAD/DTX functionality
  • Source code available
  The Ensigma implementation is fully compliant with ETSI specifications:
  • GSM 6.60 v5.1.0 (ETS 300 762 1)
  • GSM 6.54 v5.1.0 (ETS 300 762 2)
  • GSM 6.61 v5.1.0 (ETS 300 762 3)
  • GSM 6.62 v5.1.0 (ETS 300 762 4)
  • GSM 6.81 v5.1.0 (ETS 300 762 5)
  • GSM 6.82 v5.1.0 (ETS 300 762 6)
  • GSM 5.03 v5.2.1 (ETS 300 909)

Processor and System Requirements

  • Program memory (ROM): 12041 words
  • Data memory (ROM): 5481 words
  • Data memory (XRAM): 1149 words (permanent per channel) + 2133 words temporary.
  • Data memory (YRAM): 501 words (temporary)
  • MIPS: <20. Worst case

The company said that the OakDSPCore has proven itself as the DSP of choice for mobile communications, offering a compact and efficient solution. The company also said that further optimisation of the software will be ongoing throughout 1997.

Ensigma is the leading European commercial company in speech and signal processing. In-house facilities also cater to hardware designs at the PCB level, as well as customised FPGAs and ASICs. Their clientele of global enterprises has repeatedly proved Ensigma's leadership in DSP implementation. Since its incorporation in 1986, Ensigma Ltd. has made dramatic progress in becoming a leading supplier of research, design and implementation expertise in advanced speech and data communication systems. The company, located in Chepstow, UK, has applied its experience to audio broadcast and telecommunication systems specialising in highly optimised DSP implementation of state-of-the-art algorithms.

OakDSPCore is a registered trademark of DSP Group, Inc. All rights reserved world-wide.

Cliff Parris
Ensigma Ltd.
Turing House, Station Road Chepstow, NP6 5PB, U.K
Tel: 44 1291 625 422
FAX: 44 1291 620 301