Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: π/4 DQPSK | Statement: [iDEN, usesModulation, π/4 DQPSK]

Target entity: π/4 DQPSK
Context triple: [iDEN, usesModulation, π/4 DQPSK]

• A. PSK
  PSK is the abbreviation for the Polish Women's Auxiliary Service, a World War II-era organization of Polish women who supported military operations through various non-combat roles.
• B. PSK
  PSK is the commonly used abbreviation for the Scottish Parliament constituency of Perthshire South and Kinross-shire.
• C. OFDM
  OFDM (Orthogonal Frequency-Division Multiplexing) is a digital multi-carrier modulation technique that splits data across many closely spaced orthogonal subcarriers to improve robustness against interference and multipath fading in wireless and wired communication systems.
• D. SC-FDMA
  SC-FDMA (Single-Carrier Frequency Division Multiple Access) is a multi-carrier transmission scheme used primarily in LTE uplink that combines single-carrier characteristics with frequency-domain equalization to achieve lower peak-to-average power ratio than OFDM.
• E. DVB-S2
  DVB-S2 is an advanced digital satellite television broadcasting standard widely used in Europe and beyond for efficient, high-quality transmission of TV and data services.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: π/4 DQPSK
Triple: [iDEN, usesModulation, π/4 DQPSK]

π/4 DQPSK is a digital phase modulation scheme that encodes data by shifting the carrier phase in quarter-pi increments to improve spectral efficiency and reduce signal distortion in wireless communication systems.

Target entity: π/4 DQPSK
Target entity description: π/4 DQPSK is a digital phase modulation scheme that encodes data by shifting the carrier phase in quarter-pi increments to improve spectral efficiency and reduce signal distortion in wireless communication systems.

• A. PSK
  PSK is the abbreviation for the Polish Women's Auxiliary Service, a World War II-era organization of Polish women who supported military operations through various non-combat roles.
• B. PSK
  PSK is the commonly used abbreviation for the Scottish Parliament constituency of Perthshire South and Kinross-shire.
• C. OFDM
  OFDM (Orthogonal Frequency-Division Multiplexing) is a digital multi-carrier modulation technique that splits data across many closely spaced orthogonal subcarriers to improve robustness against interference and multipath fading in wireless and wired communication systems.
• D. SC-FDMA
  SC-FDMA (Single-Carrier Frequency Division Multiple Access) is a multi-carrier transmission scheme used primarily in LTE uplink that combines single-carrier characteristics with frequency-domain equalization to achieve lower peak-to-average power ratio than OFDM.
• E. DVB-S2
  DVB-S2 is an advanced digital satellite television broadcasting standard widely used in Europe and beyond for efficient, high-quality transmission of TV and data services.
• F. None of above. chosen