Database: scholar
Question: How many papers were written on Multiuser Receiver in the Decision Feedback this year ?
SQL:
SELECT DISTINCT t3.paperid FROM paperkeyphrase AS t2 JOIN keyphrase AS t1 ON t2.keyphraseid  =  t1.keyphraseid JOIN paper AS t3 ON t3.paperid  =  t2.paperid WHERE t1.keyphrasename  =  "Multiuser Receiver in the Decision Feedback" AND t3.year  =  2016 GROUP BY t3.paperid HAVING COUNT ( DISTINCT t1.keyphrasename )  >  1;