Interference Cancellation and Iterative Detection for Orthogonal Time Frequency Space Modulation

Interference Cancellation and Iterative Detection for Orthogonal Time Frequency Space Modulation

The recently proposed orthogonal time frequency space (OTFS) modulation technique was shown to provide significant error performance advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels. In this paper, we first derive the explicit input–output relation describing OTFS modulation and demodulation (mod/demod) for delay–Doppler channels. We then analyze the cases o...

Low-Complexity Iterative Detection for Orthogonal Time Frequency Space Modulation

We elaborate on the recently proposed orthogonal time frequency space (OTFS) modulation technique, which provides significant advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels. We first derive the input–output relation describing OTFS modulation and demodulation (mod/demod) for delay–Doppler channels with arbitrary number of paths, with given delay and Dopple...

Orthogonal Frequency Division Multiplexing Modulation and Inter-carrier Interference Cancellation

Iterative Space-Time Interference Cancellation for W-CDMA Systems

Iterative multiuser interference cancellation schemes for Direct Sequence Code Division Multiple Access systems exhibit good performance results for a reasonable complexity. We study an efficient iterative scheme, combining interference cancellation, soft input soft output decoding and beamforming. To deal with unknown channels, we follow two approaches: on one hand the addition of a pilot-aide...

Iterative interference cancellation in multiuser relaying with fast frequency-hopping modulation

A novel iterative receiver is proposed for relay-assisted multiuser communications in which multiple users transmit to a destination with the help of a relay and using fast frequency-hopping modulation. Each user employs a channel encoder to protect its information and facilitate interference cancellation at the receiver. The signal received at the relay is either amplified, or partially decode...