Adaptive decoding based on signal to noise ratio (SNR)

• Main Authors: CAMERON KELLY BRIAN, SHEN BAZHONG, TRAN HAU THIEN, LEE TAK K, MONTREUIL LEO, PRODAN RICHARD S, KLIGER AVI, MIN JONATHAN S
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2014
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The present invention relates to an adaptive decoding based on signal to noise ratio (SNR). A communication device is configured adaptively to process a receive signal based on noise that may have adversely affected the signal during transition via communication channel. The device may be configured to identify those portions of the signal of the signal that are noise-affected (e.g., noise-affected sub-carriers of an orthogonal frequency division multiplexing (OFDM) signal), or the device may receive information that identifies those portions of the signal that are noise-affected from one or more other devices. The device may be configured to perform the modulation processing of the received signal to generate log-likelihood ratios (LLRs) for use in decoding the signal. Those LLRs associated with noise-affected portions of the signal are handled differently than LLRs associated with portions of the signal that are not noise-affected. The LLRs may be scaled based on signal to noise ratio(s) (SNR(s)) associated