Infineon Technologies Ag

Intel Corporation

Lantiq Deutschland Gmbh

Yossi Erlich

Andreas Wiesbauer

Stefano Marsili

Manfred Punzenberger

Assaf Yaakov Kasher

Assaf Gurevitz

Ilan Sutskover

Christoph Sandner

Eran Sharon

Simon Litsyn

Raffaele Salerno

Yaron Rashi

Eyal Hochdorf

An embodiment of the present invention provides an apparatus, comprising a transmitter operable to communicate in a wireless network and adapted to use an efficient Golay correlator running at 1.5 times a sampling rate.

Apparatus and methods using an efficient Golay correlator running at 1.5 the sampling rate in wireless communication systems

A fast frequency-hopping transceiver comprises a RF-unit arranged on a first chip, a base-band unit on a second chip, a bidirectional operable data and control interface arranged between said first and said second chip having at least one data line for data communication, at least one control line for controlling the data communication and at least one clock line for providing a clock signal, memory means implemented within said RF-unit containing all the required chip settings which are specific to a certain frequency of received and/or transmitted data being part of the intended hopping sequence. The transceiver also includes control means for programming said memory means during an initialization phase during a set-up of a communication link of said data communication.

Fast frequency-hopping transceiver and method

Delay diversity is implemented within a wireless system in a manner that can achieve a relatively flat spectrum in a receiving device. In at least one embodiment, phase shift values from an orthogonal P&#xd7;N matrix A are used to provide phase shifts to a data packet to be transmitted from N transmit antennas, in a single spatial stream, to a remote wireless device. The matrix A is an orthogonal matrix with A&#xb7;A=P&#xb7;I and P&#x2267;N. Delay diversity values are also provided to the data packet before transmission.

Spectrally flat delay diversity transmission

Briefly, in accordance with one or more embodiments, parallel DFE processing may be utilized for single carrier systems that employ cyclic prefixes. The achieved parallelism allows working at contemporary clock rates that are significantly lower than the required sampling rate at high bandwidth systems such as 60 GHz transmissions.

Lower processing rate decision feedback equalizer for higher rate carrier signal

Method for data transmission within a wireless local area network (WLAN) which is operable simultaneously with other wireless local area networks (WLANs) in the same local area, wherein each wireless local area network (WLAN) comprises at least one transceiver, wherein a transmitting transceiver of a wireless local area network (WLAN) transmits a signal that conveys data to a receiving transceiver of the same wireless local area network (WLAN) during data transmission intervals with changing frequency bands, wherein the frequency band is changed with each data transmission interval in a cyclical order according to a predetermined frequency hopping sequence which is identical for all simultaneously operated wireless local area networks (WLANs), wherein the transmitting transceivers of different wireless local area networks (WLANs) start the respective data transmissions at shifted times to establish different data transmission channels for the wireless local area networks (WLANs).

Method for data transmission within a wireless local area network

A Dual Carrier Modulator (DCM) for a Multiband OFDM (Orthogonal Frequency Division Multiplexing) Transceiver of a Ultra Wide Band (UWB) wireless personal access network transmitting OFDM modulated symbols is provided, wherein each OFDM symbol is modulated by a predetermined number of encoded bits. The Dual Carrier Modulator comprises a grouping unit for grouping Nencoded bits of a serial bit stream into bit groups each having a predetermined number of bits. The Dual Carrier Modulator also comprises a mapping unit for mapping each bit group received from said grouping unit to complex symbols using an orthogonal transform. The Dual Carrier Modulator further comprises a reordering unit for reordering the complex symbols mapped by said mapping unit. Each complex symbol is provided to modulate a corresponding data tone of an OFDM symbol.

Dual carrier modulator for a multiband OFDM UWB transceiver

Preamble generator for a multiband frequency division multplexing (OFDM) tranceiver of a wireless personal area network (WPAN) being switchable between a time frequency interleaving (TFI)-mode wherein data packets are transmitted by said transceiver in different frequency bands according to a predetermined frequency hopping pattern and a fixed frequency interleaving (FFI) mode wherein data packets are transmitted by the transceiver in at least one fixed frequency band, wherein said preamble generator scrambles in the fixed frequency interleaving (FFI) mode a predetermined preamble of the data packets by multiplying said preamble with a pseudo random data sequence to flatten a power spectrum of said preamble.

Preamble generator for a multiband OFDM transceiver

Interleaving circuit for a multiband OFDM (orthogonal frequency division multiplexing) transceiver of a ultra wide band wireless personal access network transmitting OFDM modulated symbols, wherein each OFDM symbol consists of a predetermined number (N) of encoded bits,

Interleaving circuit for a multiband OFDM transceiver

A DC-offset correction circuit includes an analog circuit to generate a plurality of analog offset-correction signal values, each of which are assigned to a hop band. The analog circuit is coupled to a tap of an analog receiver chain and includes a first analog selector to select an analog offset-correction signal value, the selected analog offset correcting signal value being assigned to a current hop band. Further, the DC-offset correction circuit includes a combiner to combine a received signal with the selected analog offset-correction signal value and feed the analog receiver chain.

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Hod Hasharon, Israel

Yossi Erlich