Path: utzoo!utgpu!water!watmath!clyde!rutgers!cmcl2!brl-adm!husc6!hao!gatech!amdcad!phil From: phil@amdcad.AMD.COM (Phil Ngai) Newsgroups: comp.dcom.modems Subject: Re: Telebit Rev 4.0 reverse channel (was: Trailblazer working on tty000?) Message-ID: <20401@amdcad.AMD.COM> Date: 16 Feb 88 03:52:52 GMT References: <995@neoucom.UUCP> <718@ddsw1.UUCP> <577@tapa.UUCP> <1009@neoucom.UUCP> Reply-To: phil@amdcad.UUCP (Phil Ngai) Organization: Advanced Micro Devices Lines: 14 In article <1009@neoucom.UUCP> wtm@neoucom.UUCP (Bill Mayhew) writes: >The serious high speed FAST mode of the TB uses a Trellis coding >method, and is modulated/demoduated using an MC68000 CPU and a >General Instruments DSP chip which implement a Vitterbi (sp?) Could you explain why you call it a Trellis coding method? I think I know what Trellis coding is and I think I know what PEP is. I didn't know that PEP used Trellis, or am I misunderstanding you? -- I speak for myself, not the company. Phil Ngai, {ucbvax,decwrl,allegra}!amdcad!phil or phil@amd.com