摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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, wherein each OFDM symbol is modulated by a predetermined number (NCBPS) of encoded bits, said Dual Carrier Modulator (1) comprising: (a) a grouping unit (1-1) for grouping NCBPS encoded bits of a serial bit stream into bit groups each having a predetermined number (m) of bits; (b) a mapping unit (1-2) for mapping each bit group received from said grouping unit to complex symbols (y) using an orthogonal transform; and (c) a reordering unit (1-3) for reordering the complex symbols (y) mapped by said mapping unit, wherein each complex symbol (y) is provided to modulate a corresponding data tone of an OFDM symbol.
摘要:
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×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·AT=P·I and P≧N. Delay diversity values are also provided to the data packet before transmission.
摘要:
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×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·AT=P·I and P≧N. Delay diversity values are also provided to the data packet before transmission.
摘要:
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.
摘要:
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.