Asynchronous sequential symbol synchronizers based on pulse comparison by both transitions at half bit rate

This work studies the asynchronous sequential symbol synchronizers based on pulse comparison by both transitions at half bit rate. Their performance will be compared with the reference asynchronous symbol synchronizers based on pulse comparison by both transitions at bit rate. For the reference and proposed variants, we consider two versions which are the manual (m) and the automatic (a). The objective is to study the four synchronizers and evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal Noise Ratio)

Asynchronous sequential symbol synchronizers based on pulse comparison by positive transitions at half bit rate

This work presents the asynchronous sequential symbol synchronizers based on pulse comparison by positive transitions at half bit rate. Their performance will be compared with the reference asynchronous symbol synchronizers based on pulse comparison by both transitions at bit rate. For the reference and proposed variants, we consider two versions which are the manual (m) and the automatic (a). The objective is to study the four synchronizers and evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal Noise Ratio)

Asynchronous Sequential Symbol Synchronizers based on Pulse Comparison by Hybrid Transitions at Quarter Bit Rate

This work studies the asynchronous sequential symbol synchronizers based on pulse comparison by hybrid (both and positive) transitions at quarter bit rate. Their performance will be compared with the standard reference asynchronous symbol synchronizers based on pulse comparison by both transitions at bit rate. For the reference and proposed variants, we consider two versions which are the manual (m) and the automatic (a). The objective is to study the four synchronizers and evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal Noise Ratio).University of Beira Interiorinfo:eu-repo/semantics/publishedVersio

Prefilter Bandwidth Effects in Asynchronous Sequential Symbol Synchronizers based on Pulse Comparison by Hybrid Transitions at Quarter Bit Rate

This work studies the prefilter bandwidth effects in four asynchronous sequential symbol synchronizers. We consider three prefilter bandwidths namely B1=¥, B2=2.tx and B3=1.tx, where tx is the bit rate. The synchronizer has two variants one asynchronous by both transitions at bit rate and other asynchronous by hybrid (both and positive) transitions at quarter bit rate. Each variant has two versions namely the manual and the automatic. The objective is to study the prefilter with the four synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal Noise Ratio).University of Beira Interiorinfo:eu-repo/semantics/publishedVersio

Carrier phase synchronizers

This work studies four carrier phase synchronizers (CPS) or carrier Phase Lock Loop (CPLL). The synchronizers are based in a loop with VCO (Voltage Controlled Oscillator) that synchronizes the output feedback with the input. We consider four carrier synchronizers namely the analog, hybrid, combinational and sequential. The difference between them is in the phase comparator. The main objective is to study the synchronizers output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal to Noise Ratio).University of Beira Interiorinfo:eu-repo/semantics/publishedVersio

Prefilter Bandwidth Effects in Data Phase Synchronizers of Closed Loop

This work studies the prefilter bandwidth effects on the data phase synchronizers of closed loop. The prefilter changes its bandwidth, first B1=(infinite), after B2=2.tx and next B3=1.tx, tx is the bit rate. We consider also four data phase synchronizers or data phase lock loop namely the analog (DPLL_ana), hybrid (DPLL_hib), combinational (DPLL_cmb) and sequential (DPLL_seq). The objective is to study the prefilter bandwidth with the four data synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal to Noise Ratio).University of Beira Interiorinfo:eu-repo/semantics/publishedVersio

Data phase synchronizers of closed loop

This work studies the data phase synchronizers of closed loop or data phase lock loop (DPLL). This synchronizer have all its blocks inside of the loop, for this reason it is called closed loop. The synchronizer is a loop with a phase comparator and VCO (Voltage Controlled Oscillator), that synchronizes the output feedback with the main input data. We consider four data synchronizers namely the analog, the hybrid, the combinational and the sequential. The objective is to study the four synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root MeanSquare) versus input SNR (Signal to Noise Ratio).University of Beira Interiorinfo:eu-repo/semantics/publishedVersio

Prefilter bandwidth effects in carrier phase synchronizers

This work studies the effects of the prefilter bandwidth on the carrier phase synchronizers. We apply three different prefilter bandwidth namely B1=¥ (infinite), B2=2.tx and B3=1.tx, where tx is the transmissionrate. We consider also four carrier wave phase synchronizers namely the analog (ana), the hybrid (hib), the combinational (cmb) and the sequential (seq). The objective is to study the prefilter bandwidth with the four carrier synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal to Noise Ratio).University of Beira Interiorinfo:eu-repo/semantics/publishedVersio

Prefilter bandwidth effects in asynchronous sequential symbol synchronizers based on pulse comparison

This work studies the effects of the prefilter bandwidth in four sequential symbol synchronizers. We consider three prefilter bandwidths namely B1=∞, B2=2.tx and B3=1.tx, where tx is the bit rate. The synchronizer has two variants one synchronous by both transitions at rate and other asynchronous by both transitions at rate. Each variant has two versions namely the manual and the automatic. The objective is to study the prefilter with the four synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal Noise Ratio)

Extended Investigation on Asynchronous Sequential Symbol Synchronizers based on Pulse Comparison by Positive Transitions at Quarter Bit Rate

This work studies the asynchronous sequential symbol synchronizers based on pulse comparison by positive transitions at quarter bit rate. Their performance will be compared with the standard reference asynchronous symbol synchronizers based on pulse comparison by both transitions at bit rate. For the reference and proposed variants, we consider two versions which are the manual (m) and the automatic (a). In systems with no linear distortion, the sysnchronizers of positive transitions can be preferable to the both transitions. The objective is to study the four synchronizers and evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal Noise Ratio).University of Beira Interiorinfo:eu-repo/semantics/publishedVersio