18033670. TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM simplified abstract (Samsung Electronics Co., Ltd.)
Contents
- 1 TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Original Abstract Submitted
TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM
Organization Name
Inventor(s)
Jeonghoon Choi of Pohang-si (KR)
TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM - A simplified explanation of the abstract
This abstract first appeared for US patent application 18033670 titled 'TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM
Simplified Explanation
The patent application describes a transmitter and receiver for DFT-spread OFDM signals, which allows for easy trade-off between PAPR and frequency efficiency without inter-symbol interference.
- Constellation rotation angle and frequency domain spectrum shaping vector are designed to achieve the trade-off.
- The transmitter includes a constellation rotation unit, pruned DFT-spread unit, frequency domain spectrum shaping unit, and subcarrier allocation unit.
- The constellation rotation unit rotates a symbol vector by a constellation rotation angle.
- The pruned DFT-spread unit spreads the rotated symbol vector using a pruned DFT matrix.
- The frequency domain spectrum shaping unit performs a Hadamard product on the spread vector with a shaping vector.
- The subcarrier allocation unit assigns the shaped vector to a subcarrier in the allocated frequency range.
Potential applications of this technology:
- Wireless communication systems
- Digital broadcasting systems
- Mobile communication networks
Problems solved by this technology:
- Trade-off between PAPR and frequency efficiency without inter-symbol interference
- Simplified design and implementation of DFT-spread OFDM systems
Benefits of this technology:
- Improved flexibility in managing PAPR and frequency efficiency
- Enhanced performance and reliability of wireless communication systems
- Simplified design and reduced complexity of DFT-spread OFDM systems
Original Abstract Submitted
Provided are a discrete Fourier transform (DFT)-spread orthogonal frequency division multiplexing (OFDM) transmitter and transmission method, and a DFT-spread OFDM receiver and reception method which may receive signals transmitted thereby, in which a constellation rotation angle and a frequency domain spectrum shaping vector are designed such that a PAPR may be easily traded off with frequency efficiency even without inter-symbol interference. The DFT-spread OFDM transmitter includes a constellation rotation unit constellation-rotating a symbol vector including M pulse amplitude modulation (PAM) symbols by a constellation rotation angle to generate a constellation-rotated symbol vector, a pruned DFT-spread unit spreading the constellation-rotated symbol vector by using a pruned DFT matrix to generate a pruned DFT-spread vector, a frequency domain spectrum shaping unit performing a Hadamard product on the pruned DFT-spread vector with a shaping vector to generate a frequency domain spectrum shaped vector, and a subcarrier allocation unit allocating the frequency domain spectrum shaped vector to a subcarrier in an allocated frequency range.
