| A New Cross Layer Approach to QoS-Aware Proportional Fairness Packet Scheduling in the Downlink of OFDM Wireless Systems Recent countries visiting this post |  |
 | 5 | United States |
| A New Cross Layer Approach to QoS-Aware Proportional Fairness Packet Scheduling in the Downlink of OFDM Wireless Systems Recent countries visiting this post | |
| 5 | United States |