Definition

Noun: - The maximum data rate that can be attained over a given communication channel: This is a technical term from information theory and telecommunications. It refers to the highest possible speed, measured in bits per second (bps), at which information can be reliably transmitted through a specific channel without error, given its bandwidth and signal-to-noise ratio.

Usage

• This term is used in technical contexts involving data communication, networking, and information theory.
• It is often discussed in relation to the limitations or performance of communication systems, such as internet connections, wireless networks, or telephone lines.

Examples

• Noun:
  • The engineer calculated the channel capacity to determine if the fiber-optic line could support the new video streaming service.
  • Shannon's theorem provides a formula for calculating the theoretical channel capacity of a communication link.

Advanced Usage

• "To approach/reach channel capacity": Describes a system operating at or near its maximum theoretical data rate.
  • Modern error-correcting codes allow data transmission systems to closely approach channel capacity.

Variants and Related Words

• Bandwidth (n): The range of frequencies a channel can carry, which is a key factor in determining capacity. (Note: Bandwidth is related but not synonymous; it is a component of the capacity calculation).
• Data rate (n): The actual speed of data transfer, which may be below the channel capacity.
• Throughput (n): The actual rate of successful message delivery, which is often less than the channel capacity due to real-world overhead and errors.

Synonyms

• Maximum data rate
• Shannon capacity (specifically referring to the theoretical limit defined by Claude Shannon)

Related Phrases

• Channel coding theorem: A fundamental principle that states that reliable communication is possible at any rate below the channel capacity.
• Noisy-channel coding theorem: Another name for the principle that defines the concept of channel capacity.

Noun

1. the maximum data rate that can be attained over a given channel