CSI feedback in OFDMA wireless networks with multiple transmitter-receiver pairs

摘要: In wireless systems, multiple transmitters often need to deliver data receivers in the same interference domain. OFDMA enables avoidance by assigning disjoint sets of subcarriers each transmitter. However, optimal subcarrier allocation requires CSI feedback transmitters, thus incurring overhead. We evaluate an mechanism inspired switching techniques, which allows nodes locally decide they prefer. Hence, is minimal, as only preference values be shared. implement this approach on software defined radios and compare it standard mechanisms. Although our local information, results show that performs close a solution based full knowledge.