Cost-aware downlink scheduling of shared channels for cellular networks with relays. - Narasimha Challa; Hasan Çam (IPCCC, 2004)

Flexible Code Allocation to Improve System Utilization Using Nonblocking OVSF Codes in WCDMA. - Narasimha Challa; Hasan Cam (ICC, 2008)

Secure and Efficient Data Transmission over Body Sensor and Wireless Networks. - Narasimha Challa; Hasan Çam; Madhur Sikri (EURASIP J. Wirel. Commun. Netw., 2008)

Class-Based Fair Code Allocation with Delay Guarantees for OVSF-CDMA and VSF-OFCDM in Next-Generation Cellular Networks. - Narasimha Challa; Hasan Çam (EURASIP J. Wirel. Commun. Netw., 2010)