Multiple access schemes with interference mitigation

A wireless communication method, comprising:

• generating, from information bits, a modulated signal;
• performing a Discrete Fourie Transform (DFT) operation to the modulated signal to provide a transformed signal;
• spreading the transformed signal using a spread code;
• and
• transmitting an output of the spreading, and
• wherein the spread code is a sparse spreading code including zeros or a non-sparse spreading code having no zeros, and
• wherein the generating the modulated signal includes dividing the information bits into multiple streams and wherein a number of the multiple streams is selected based on a number of information bits.

A wireless communications apparatus comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement a method comprising:

• generating, from information bits, a modulated signal;
• spreading the modulated signal using a spreading code to provide a spread data signal;
• processing the spread data signal through a randomization;
• and
• transmitting an orthogonal frequency division multiplexing (OFDM) signal based on an output of the processing, and
• wherein the randomization processes the spread data using a scramble code or an interleaver, the scramble code or the interleaver being cell-specific or user-grouped, and
• wherein the generating the modulated signal includes dividing the information bits into multiple streams and wherein a number of the multiple streams is selected based on a number of information bits.