'Spread spectrum systems' presentation slideshows

MMD Evolution

MMD Evolution. June xx, 2005 zzz. Introduction. MMD provides core standards for VoIP and real-time multi-media Not just a replacement for circuit-switched voice Other example services: voice/video conferencing, PTT, Presence and Instant Messaging.

499 views • 30 slides

So you chose EE 422 Communications Systems II!!

338 views • 15 slides

Recently Published Documents

Recently Published Documents. 20 Addenda to Published Standards 11 New Documents 10 Standards 4 ANSI 6 TIA 1 TSB 8 Revisions of Published Standards 10 more released for publication. New Standards.

225 views • 8 slides

Summary

Summary. Direct-sequence MPSK and Frequency-hop MFSK represent two principle categories of spread-spectrum communications. Another technique is time-hope PPM, may be popular in the future. They rely on the use of a pseudo-noise (PN) sequence, which is applied differently in these categories.

191 views • 8 slides