Ofdm/ofdma frame structure for communication systems

Ofdma based on cognitive radio

Ofdma control channel interlacing

Ofdma with adaptive subcarrier-cluster configuration and...

Ofdma with adaptive subcarrier-cluster configuration and...

Off network mobile to mobile calling using sip protocol

Off-hook detector for automatic meter reading equipment

Off-hook telephone with temporary park feature

Off-line broadband network interface

Off-line mms malware scanning system and method

Off-line notification and communication network

Off-line smartphone file system snapshots

Off-load cellular system for off-loading cellular service...

Off-premises cable television channel interdiction method...

Off-premises cable television channel interdiction method...

Off-premises station line circuit for a key telephone system

Offering differentiated services

Office communications system

Office id remote with oscillating circuit

Office line connection circuit during service interruptions...