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Definition

Forward Error Correction

FEC

Coding schemes that add redundancy to a data stream so errors can be detected and corrected at the receiver without retransmission. Convolutional, Reed-Solomon, LDPC, and Turbo are common.

Related terms

G/T

A receive system figure of merit equal to antenna gain divided by system noise temperature. Larger G/T means better rece...

Bit Error RateBER

The fraction of received bits that differ from the transmitted bits. Common targets are 10⁻⁵ for telemetry and 10⁻⁹ for ...

X-band

A radio frequency band from 8 to 12 GHz used heavily for deep space and high-rate Earth observation downlinks. Offers go...

Ka-band

A radio frequency band from 26.5 to 40 GHz, increasingly used for high-bandwidth satellite downlinks. Higher gain than X...

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