System and method for generating spreaded sequence with low peak-to-average power ratio (papr) waveform

A method for detecting a waveform in a communication network, the method comprising:

• transforming, by a receiver, an input data received from a transmitter using Discrete Fourier Transform (DFT) to obtain transformed data;
• de-mapping, by the receiver, the transformed data using sub carriers to generate a de-mapped transformed output data;
• filtering, by the receiver, the de-mapped transformed output data using estimated channel information to generate OFDM symbol level output;
• processing, by the receiver, the OFDM symbol level output to remove a cover code and generate processed OFDM symbol data;
• and
• estimating, by the receiver, at least one of data and control information by demodulating the processed OFDM symbol data.

A communication system for generating a waveform in a communication network, the system comprising:

• a processor;
• and
• a memory communicatively coupled with the processor, wherein the processor is configured to:
• spread input data with a spread code to generate a spread data;
• perform a constellation rotation operation on the spread data to produce a rotated data;
• precode the rotated data using a precoding filter to produce a precoded data;
• perform Discrete Fourier Transform (DFT) on the precoded data to generate DFT output data;
• map the DFT output data with one of contiguous and distributed subcarriers to generate a sub-carrier mapped DFT data;
• and
• generate a waveform based on Orthogonal Frequency Division Multiplexing (OFDM) modulation of the sub-carrier mapped DFT data.

A system for detecting a waveform in a communication network, the system comprising:

• a processor;
• and
• a memory communicatively coupled with the processor, wherein the processor is configured to:
• transform an input data received using Discrete Fourier Transform (DFT) operation to obtain transformed data;
• de-map the transformed data using subcarrier to generate a de-mapped transformed output data;
• filter the de-mapped transformed output data using estimated channel information to generate OFDM symbol level output;
• process the OFDM symbol level output to remove a cover code and generate processed OFDM symbol data;
• and
• estimate at least one of data and control information by demodulating the processed OFDM symbol data.