Abstract: In a wireless OFDM communication system such as a neighborhood area network, one or more of the following features may be used to increase throughput while accommodating worst-case channel conditions. Firstly, the cyclic prefix may be chosen to be greater than or equal to the longest delay profile that could reasonably be expected so that either demodulation method can be accommodated. Secondly, the number of pilots may be chosen to be less than that required by the worst case channel so that the data rate is maximized for a large portion of the channels in use. Thirdly, the data packet may be constructed such that the demodulation mode employed for data payload encoding is signaled in the first portion of the data packet often referred to as the PHY Header. The PHY Header is always transmitted as a coherent modulation including data and pilot tones.

Abstract: A hands-free kit for cell-phones combines the wireless capabilities of Bluetooth and the sound and visual functionalities of a tape player. A device that has a shape of a conventional magnetic cassette comprises a Bluetooth module. The module automatically detects a data communication initiated with the portable apparatus over a wireless network when the device is inserted in the tape player. Then the module automatically configures the apparatus to transmit to the device a low frequency signal representative of the communicated data. The device converts the received low frequency signal into a magnetic signal further communicated to the tape player for play out and/or display. Thus, when a cell-phone rings, a driver inserts the device in his tape player and the cell is picked up and the conversation played out loud on the loud speakers in the car.

Abstract: A device is provided with a Bluetooth module, a control user interface and a headset. The Bluetooth module is configured to receive a downlink wireless Bluetooth signal from a portable Bluetooth-enabled communication apparatus. The wireless Bluetooth signal is representative of data received by the communication apparatus over a wireless network. The control user interface is coupled to the Bluetooth module. The control user interface enables to transmit control commands to the communication apparatus via the Bluetooth module in response to respective user input commands. The headset is mounted on the device and is operably coupled to the Bluetooth module. The headset automatically renders an audio signal to the user when the headset is detached from the device. The audio signal is derived from the downlink wireless Bluetooth signal.

Abstract: A hands-free kit for cell-phones combines the wireless capabilities of Bluetooth and the sound and visual functionalities of a tape player. A device that has a shape of a conventional magnetic cassette comprises a Bluetooth module. The module automatically detects a data communication initiated with the portable apparatus over a wireless network when the device is inserted in the tape player. Then the module automatically configures the apparatus to transmit to the device a low frequency signal representative of the communicated data. The device converts the received low frequency signal into a magnetic signal further communicated to the tape player for play out and/or display. Thus, when a cell-phone rings, a driver inserts the device in his tape player and the cell is picked up and the conversation played out loud on the loud speakers in the car.