초록 ▼

Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective desp

Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered "half-symbols" and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.

대표청구항 ▼

Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective desp

Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered "half-symbols" and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator. rality of waveguide paths. 20. The solid state laser device of claim 12, wherein said laser crystal and said excitation beam emission element are integrally formed on said substrate. 21. A solid-state laser device according to claim 12, wherein the thickness of the plurality of waveguide paths is between 5 and 10 μm. 22. A solid-state laser amplifier comprising: a substrate; a laser crystal formed on said substrate, said laser crystal emitting a laser beam from a second end face thereof when an excitation beam is projected to a first end face thereof; a non-reflecting film coating said first and second end faces, said non-reflecting film not reflecting a signal beam within a gain bandwidth of said laser crystal; a broad area type excitation beam emission element emitting said excitation beam, said excitation beam emission element having a small divergence-angle axis and a large divergence-angle axis, said excitation beam emission element having a first predetermined width as a dimension corresponding to said small divergence-angle axis; and a first waveguide path for said excitation beam formed on said substrate, said excitation beam being transmitted through said first waveguide path for excitation beam, said first waveguide path for excitation beam having a first end portion on which said excitation beam emitted by said excitation beam emission element impinges and a second end portion which opposes said first end face of said laser crystal, said excitation beam being emitted from said second end portion, wherein a width of said first waveguide path at said first end portion corresponds to said first predetermined width of said excitation beam emission element; a second waveguide path for signal beam entry formed on said substrate, a signal beam within said gain bandwidth being transmitted through said second waveguide path for signal beam entry, and said second waveguide path for signal beam entry having an end portion, said signal beam being emitted toward said first end face of said laser crystal from said end portion; and a thir