Patent ID: 8451793

Claim:
A wireless terminal comprising: hardware resources of a wireless terminal compatible with an OFCDM (Orthogonal Frequency And Code Division Multiplexing) system, and a control section that: configures the hardware resources of the wireless terminal according to a first configuration that is compatible with the OFCDM system when the wireless terminal is to communicate according to the OFCDM system, and configures the hardware resources of the wireless terminal according to a second configuration that is concurrently compatible with both of an OFDM (Orthogonal Frequency Division Multiplexing) system and a CDMA (Code Division Multiple Access) system to communicate with another wireless terminal using at least one of the OFDM and the CDMA systems, wherein said control section reconfigures the wireless terminal from the first configuration that is compatible with the OFCDM system to the second configuration that is concurrently compatible to communicate with both the OFDM system and the CDMA system with another wireless terminal using common hardware resources of the wireless terminal that are also used to configure the wireless terminal according to the first configuration that is compatible with the OFCDM system, wherein the common hardware resources of the wireless terminal used to configure the wireless terminal according to the first and second configurations minimizes hardware redundancy and includes a channel estimation section that performs channel estimation compatible with all of the OFCDM system, the OFDM system, and the CDMA system by adapting a switchable delay implemented by a delay section and a tap coefficient to be introduced by the common hardware resources to a signal based at least in part on which of the first and second configurations is established by the control section.