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Keysight - 5992-0020EN - Application Note :: Multi-Level Signaling Techniques

Keysight 5992-0020EN Application Note :: Multi-Level Signaling Techniques

App-Note :: Using a Wideband AWG to Optimize Data Throughput with Multi-Level Signaling Techniques. Increasing the data throughput on high-speed digital interfaces can be accomplished in at least three ways: Usi...
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Application Note :: Multi-Level Signaling Techniques

App-Note :: Using a Wideband AWG to Optimize Data Throughput with Multi-Level Signaling Techniques.

Increasing the data throughput on high-speed digital interfaces can be accomplished in at least three ways:

  • Using multiple parallel signals
  • Increasing the symbol rate
  • Using higher order modulation schemes that carry more than 1 bit per symbol (such as NRZ)

Traditionally, #1 and #2 are used because NRZ data transmission is very well understood and can be realized in a cost-effective way, both on the transmit side as well as the receive side. However, there are limitations.

Using a higher order modulation scheme has the advantage that more than 1 bit per symbol can be transmitted without increasing the bandwidth requirement. The spectrum plots below show that the data rate can be doubled without increasing the occupied bandwidth.

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App-Note :: Using a Wideband AWG to Optimize Data Throughput with Multi-Level Signaling Techniques.

Increasing the data throughput on high-speed digital interfaces can be accomplished in at least three ways:

  • Using multiple parallel signals
  • Increasing the symbol rate
  • Using higher order modulation schemes that carry more than 1 bit per symbol (such as NRZ)

Traditionally, #1 and #2 are used because NRZ data transmission is very well understood and can be realized in a cost-effective way, both on the transmit side as well as the receive side. However, there are limitations.

Using a higher order modulation scheme has the advantage that more than 1 bit per symbol can be transmitted without increasing the bandwidth requirement. The spectrum plots below show that the data rate can be doubled without increasing the occupied bandwidth.

Unsere Spezialisten im Innen- und Außendienst stehen Ihnen mit Rat und Tat zur Seite, um das für Sie richtige Messgerät zu finden.

Wir freuen uns auf Ihre Kontaktaufnahme unter:

Telefon dataTec


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