multilevel not bipolar
we can answer this question by using the following table. previous level +ve previous level -ve Next bits Next Level Next level 00 +1 -1 01 +3 -3 10 -1 +1 11 -3 +3
· 4B3T · 4B5B · 2B1Q · Hamming Code · 8b/10b encoding · 64b/66b encoding · 6b/8b encoding · 64b/66b encoding · MPlus used in DVD · Eight-to-Fourteen Modulation (EFM) used in Compact Disc · Conditioned Diphase · Coded mark inversion (CMI) · EF Carrier Suppressed Return-to-Zero Optical line code. · Alternate-Phase Return-to-Zero
It is less expensive It is available from any NT1 vedor It can support signal over twice the distance
Some words and abbreviations I know of: 10q, luq, dq, tq, rpq, iraq, freq, irq, ruq, marq, oq, hq, rtfaq, inupiaq, compaq, deq, mikmaq, ahrq, pdq, gq, req, mcq, coq, mq, nvq, nasdaq, rfq, bq, 2b1q, cq, liq, q, iaq, bbq, unq, rq, eq, i.q, rlq, ghq, suq, boq, bfoq, colloq, wq, saq, jq, qepiq, mi'kmaq, esq, seq, posslq, lq, iq, uq, loq, qqq, obliq, gnvq, fq, sqq, uuq, nlq, aq, mashriq, cinq, sq, qq, enq, arq, icq, eoq, pq, llq, jasdaq, vq, nq, inq, faq, meq, mrq, seaq