|Title||Memory Tricks: Improving Active Interference Cancellation for Out-of-Band power reduction in OFDM|
|Publication Type||Conference Paper|
|Year of Publication||2021|
|Authors||Hussain, K, López-Valcarce, R|
|Conference Name||IEEE Int. Workshop Signal Process. Adv. Wireless Commun. (SPAWC)|
|Conference Location||Lucca, Italy (Virtual event)|
|Keywords||rodin, spectrum shaping|
Although active interference cancellation (AIC) is an appealing approach to reduce out-of-band radiation (OBR) in multicarrier systems without distorting data subcarriers, it usually requires a large number of reserved subcarriers to be effective. Introducing memory in AIC precoding may help alleviate this drawback in exchange for some increase in computational complexity. We propose a novel memory AIC precoder which, in contrast to previous schemes, minimizes OBR within a user-selectable frequency region and allows for controlling spectral overshoot.