Antequam intellectus Pam4 technology, quod est modulation technology? Modulation technology est ars conversionis baseband annuit (rudis electrica annuit) in transmissionem annuit. Ut ad curare communicationis efficaciam et superare problems in longa distantiam signa transmissio, necesse est transferre signum spectro ad alveo alveo per modum transmissio.
Pam4 est quartus ordinis pulsus amplitudinis modulatum (Pam) modulation technica.
Pam signum est vulgaris signum tradenda technology post Nrz (non redire ad nulla).
NRZ signum utitur duo signa campester, altum et humilis, ut repraesentare I et 0 of digital logica signum, et transmit I frenum de logica notitia per horologium cycle.
Pam4 signum usus IV diversis signo campester pro signo transmissione, et quisque horologium exolvuntur potest transmit II bits of logic notitia, nimirum 00, I, X et XI.
Ideo sub eodem baud rate condiciones, aliquantulus rate of Pam4 signum est alterum quod Nrz signum, quod duplicat transmissionem efficientiam et efficaciter reduces costs.
Pam4 technology est late in agro summus celeritate signum interconnection. In praesens, illic es 400g optical transceiver moduli secundum Pam4 modulation technology ad Data Center et 50g optical transceiver moduli secundum Pam4 Modulation Technology ad 5G Interconnection Network.
The implementation process of the 400G DML optical transceiver module based on PAM4 modulation is as follows: when transmitting unit signals, the received 16 channels of 25G NRZ electrical signals are input from the electrical interface unit, preprocessed by the DSP processor, PAM4 modulated, and output 8 channels of 25G PAM4 electrical signals, which are loaded onto the driver chip. The high-speed electrical signals are converted into 8 channels of 50Gbps high-speed optical signals through 8 channels of lasers, combined by a wavelength division multiplexer, and synthesized into 1 channel of 400G high-speed optical signal output. Cum accepto unitatis annuit, accepit I-channel 400g summus celeritas optical signum est input per optical interface unitas, convertitur in VIII-channer 50gbps summus celeritate, conversus in VIII-channel 50gbps summus celeritate optical per a demultips 50gbps summus celeritate optical per damultal, et in signum electrica per receptorem et convertit in electrica signo, et conversus in electrica signum per receptorem, et conversus in electrica signum per quod receptorem et convertit in electrica signum. Post horologium recuperatio, amplificationem, aequationi, et Pam4 Demodulation a DSP dispensando chip, electrica signum in XVI channels de 25g nrz electrica signum.
Applicare Pam4 modulation technology ad 400GB / S optical modules. Et 400GB / S optical module secundum Pam4 modulation potest reducere numerum requiritur lasers ad transmittendi finem et correspondenter reducere numerum requiritur receptores ad recipiendum finem debitum ad altiorem ordinem modulatum techniques ad Nrz. Pam4 modulation reducit numerum optical components in optical moduli, quae potest commoda ut inferior multitudo costs, reducitur potentia consummatio, minor packaging magnitudine.
Non est a demanda 50gbit / s optical modules in 5g transmissio et backhaul networks, et solutio secundum 25g optical cogitationes et suppleatur per Pam4 Pulse Moderulation Forma est adoptatur ad adscribere humilis-sumptus et altum Bandwidth requisita.
Cum describeret Pam-IV annuit, is est maximus ut stipendium operam ad differentiam inter baud rate et frenum rate. Nam traditional nrz annuit, quia unum symbolum transmits una frenum of notitia, in frenum rate et baud rate sunt eadem. Exempli gratia, in 100g Ethernet, usura quattuor 25.78125GBAUD annuit pro tradenda, frenum rate in se signo etiam 25.78125gbps et quatuor signa consequi 100Gbps signa transmissione; Nam Pam-IV annuit, quia unum symbolum transmits II bits of notitia, frenum rate quod potest traducitur est bis in baud rate. Nam exempli gratia, usura IV channels de 26.5625gbaud annuit ad transmissionem in 200g Aer, in frenum rate in se alveo est 53.125gbps, et IV channels de significationibus potest consequi 200GBPs signum transitum. Nam 400g Ethernet, potest esse cum VIII channels de 26.5625gbaud annuit.
Post tempus: Ian-02-2025