摘要:
A wireless receiver (UST). The receiver comprises at least one antenna (ATU) for receiving a plurality of frames (FR) in a form of a plurality of paths. Each of the plurality of frames comprises a plurality of time slots (SLN), and each of the plurality of time slots comprises a plurality of symbols. Further, each of the plurality of paths has a corresponding sample position, wherein the plurality of symbols comprise a primary synchronization code symbol (PSC). The receiver further comprises circuitry (52) for correlating a primary synchronization code across a group of the plurality of symbols, and circuitry for identifying a plurality of path positions within the group. Each of the plurality of path positions corresponds to a respective one of a plurality of largest-amplitude paths represented within the group as detected in response to the circuitry for correlating. Finally, the receiver comprises circuitry for combining (54, 58) the plurality of largest-amplitude paths in response to identification of those paths by the circuitry for identifying.
摘要:
A communication circuit is designed with a processing circuit (11) coupled to receive a plurality of first control signals (402, 408) from a source external to the communication circuit. The processing circuit produces a second control signal (432, 434) and a second power control (422, 436) signal during each of a plurality of predetermined time periods. The second power control signal is determined by a corresponding first control signal from said plurality of first control signals. The second power control signal is produced proximate the second control signal. A serial circuit is coupled to receive the second control signal and the second power control signal during a respective predetermined time period. The serial circuit produces the second control signal proximate the second power control signal.
摘要:
A wireless communication network (10). The network comprises a wireless receiver (14). The receiver comprises at least one antenna (AT14) for receiving a plurality of frames in a form of a plurality of paths. Each of the plurality of frames is modulated by a plurality of chips, and chip in the plurality of chips has a like chip duration. The receiver further comprises a plurality of path resources (F1, F2), and this plurality of path resources comprises a first path resource (F1) configured to receive a first plurality of symbols from a first path in the plurality of paths and a second path resource (F2) configured to receive a second plurality of symbols from a second path in the plurality of paths. The plurality of path resources also comprises circuitry for sampling the second path at a time less than the chip duration from a time when the circuitry for sampling samples the first path. Still further, the plurality of path resources comprise circuitry (442, 461), responsive to the circuitry for sampling, for establishing a first channel estimate for the first path in response to the first path and the second path. Lastly, the plurality of path resources comprises circuitry (441, 462), responsive to the circuitry for sampling, for establishing a second channel estimate for the second path in response to the first path and the second path.
摘要:
A communication circuit is designed with a processing circuit (11) coupled to receive a plurality of first control signals (40-45) and a second control signal (46) from a source external to the communication circuit during a predetermined time (49). The plurality of first control signals are equally spaced apart in time. The second control signal is proximate one of the first control signals (40). The processing circuit produces a power control signal in response to at least two of the plurality of first control signals. A serial circuit is coupled to receive the power control signal. The serial circuit produces the plurality of third control signals and the power control signal.
摘要:
A method (70) of operating a wireless receiver (UST). The method receives a wireless communicated signal, wherein the signal comprises asymmetrically spaced synchronization channel components. The method also defines (72) a set of signals from the communicated signal, wherein the set spans a number of equal duration time slots and comprises at least a first synchronization channel component and a second synchronization channel component. The method also forms (76) a first signal combination by combining a first portion of the set of signals with a second portion of the set of signals, and it forms (78) a second signal combination by combining a third portion of the set of signals with a fourth portion of the set of signals. Finally, the method detects (80, 82, 84) a location of the first synchronization channel component and a location of the second synchronization channel component in response to at least one of the first and second signal combinations.
摘要:
A wireless receiver (UST). The receiver comprises at least one antenna (ATU) for receiving a plurality of frames (FR) in a form of a plurality of paths. Each of the plurality of frames comprises a plurality of time slots (SLN), and each of the plurality of time slots comprises a plurality of symbols. Further, each of the plurality of paths has a corresponding sample position, wherein the plurality of symbols comprise a primary synchronization code symbol (PSC). The receiver further comprises circuitry (52) for correlating a primary synchronization code across a group of the plurality of symbols and circuitry (52) for identifying a plurality of path positions within the group. Each of the plurality of path positions corresponds to a respective one of a plurality of largest-amplitude paths represented within the group as detected in response to the circuitry for correlating. The receiver further comprises circuitry (56) for defining a plurality of sub-windows. Each of the plurality of sub-windows comprises a plurality of sample positions, and each of the plurality of sub-windows includes at least one of the plurality of identified path positions. Finally, the receiver further comprises circuitry (54, 58) for combining paths selected from the sample positions within the plurality of sub-windows.
摘要:
A station capable of receiving information containing Walsh coding for a plurality of channels and canceling interference from the received information and the method of cancellation. A memory is provided for storing received signals containing a Walsh code for each of a plurality of channels as well as reflected and/or refracted versions of said received signals and a first plurality of signal paths is provided which are selectively coupled to the memory. The signal paths apply corresponding delays and inverse Walsh code transformations to separate the channels. Further, cancellation of the channels interfering with a desired channel proceeds with complementary delays and Walsh code transformation to regenerate the interference which is subtracted from the received signal in memory.
摘要:
A circuit is designed with an estimate circuit (132) coupled to receive a plurality of predetermined signals (416-418) from an external source. Each of the predetermined signals is spaced apart in time. The estimate cit produces a first estimate signal in response to at least one of the plurality of predetermined signals. An averaging circuit is coupled to receive a data signal 420 and at least one of the plurality of predetermined signals. The averaging circuit produces an average signal from the data signal and at least one of the plurality of predetermined signals.
摘要:
A circuit is designed with a measurement circuit (432). The measurement circuit is coupled to receive a first input signal (903) from a first antenna (128) of a transmitter and coupled to receive a second input signal (913) from a second antenna (130) of the transmitter. Each of the first and second signals is transmitted at a first time. The measurement circuit produces an output signal corresponding to a magnitude of the first and second signals. A control circuit (430) is coupled to receive the output signal and a reference signal. The control circuit is arranged to produce a control signal at a second time in response to a comparison of the output signal and the reference signal.
摘要:
A wireless communication system. The system comprises transmitter circuitry (BST1), the transmitter circuitry comprising encoder circuitry (50) for transmitting a plurality of frames (FR). Each of the plurality of frames comprises a primary synchronization code (PCS) and a secondary synchronization code (SSC). The encoder circuitry comprises of circuitry (501) for providing the primary synchronization code in response to a first sequence (32). The encoder circuitry further comprises circuitry (502) for providing the secondary synchronization code in response to a second sequence (54) and a third sequence (56). The second sequence is selected from a plurality of sequences. Each of the plurality of sequences is orthogonal with respect to all other sequences in the plurality of sequences. The third sequence comprises a subset of bits from the first sequence.