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Class Information
Number: 375/265
Name: Pulse or digital communications > Systems using alternating or pulsating current > Plural channels for transmission of a single pulse train > Quadrature amplitude modulation > Trellis encoder or trellis decoder
Description: Subject matter for improving the noise immunity of digital transmission system without bandwidth expansion or reduction of data rate.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620102 |
Digital broadcasting transmission and reception system |
Nov. 17, 2009 |
| 7620879 |
Method of detecting occurrence of error event in data and apparatus for the same |
Nov. 17, 2009 |
| 7617440 |
Viterbi traceback initial state index initialization for partial cascade processing |
Nov. 10, 2009 |
| 7616701 |
Zero excess bandwidth modulation |
Nov. 10, 2009 |
| 7616697 |
Cooperative inter-carrier channel coding apparatus, systems, and methods |
Nov. 10, 2009 |
| 7613246 |
VSB transmission system |
Nov. 3, 2009 |
| 7609777 |
Maximum likelihood a posteriori probability detector |
Oct. 27, 2009 |
| 7605727 |
Method, medium and apparatus for quantization encoding and de-quantization decoding using trellis |
Oct. 20, 2009 |
| 7602696 |
Adaptive guard intervals in OFDM systems |
Oct. 13, 2009 |
| 7599442 |
Transmitter synchronization in a distributed transmission system |
Oct. 6, 2009 |
| 7599419 |
Method and apparatus for use of space time trellis codes based on channel phase feedback |
Oct. 6, 2009 |
| 7594162 |
Viterbi pretraceback for partial cascade processing |
Sep. 22, 2009 |
| 7593474 |
Digital broadcast transmitting/receiving system having an improved receiving performance and signal processing method thereof |
Sep. 22, 2009 |
| 7593358 |
Transmission device for remote control systems |
Sep. 22, 2009 |
| 7590187 |
Digital broadcasting transmission and/or reception system to improve receiving performance and signal processing method thereof |
Sep. 15, 2009 |
| 7587004 |
Method for decoding data using windows of data |
Sep. 8, 2009 |
| 7586931 |
Wireless terminal turbo decoding module supporting packet splitting and decoding |
Sep. 8, 2009 |
| 7577208 |
VSB transmission system |
Aug. 18, 2009 |
| 7570700 |
Parallel concatenated code with soft-in soft-out interactive turbo decoder |
Aug. 4, 2009 |
| 7571369 |
Turbo decoder architecture for use in software-defined radio systems |
Aug. 4, 2009 |
| 7570720 |
FEC scheme for encoding two bit-streams |
Aug. 4, 2009 |
| 7564930 |
Method and apparatus for implementing a traceback processor for trellis decoding in a Viterbi decoder |
Jul. 21, 2009 |
| 7564916 |
Method for encoding a message using diagonally weighted space-time trellis code depending on bit feedback |
Jul. 21, 2009 |
| 7564905 |
System and method for providing terrestrial digital broadcasting service using single frequency network |
Jul. 21, 2009 |
| 7561634 |
Continuous phase modulation system and method with added orthogonal signals |
Jul. 14, 2009 |
| 7558329 |
Systems and methods for implementing receiver transparent Q-mode |
Jul. 7, 2009 |
| 7554953 |
Radio communication system |
Jun. 30, 2009 |
| 7555052 |
Method and system for a turbo trellis coded modulation scheme for communication systems |
Jun. 30, 2009 |
| RE40779 |
Communication system |
Jun. 23, 2009 |
| 7551695 |
Verification of the antenna weights of the base station in a UMTS mobile radio receiver by use of the Viterbi algorithm with fed-back transmission diversity |
Jun. 23, 2009 |
| 7539257 |
Continuous phase modulation system and method with added phase pulse |
May. 26, 2009 |
| 7539258 |
Audio data sync format detecting circuit |
May. 26, 2009 |
| 7539256 |
Decoding device and decoding method |
May. 26, 2009 |
| 7532677 |
Apparatus, systems and methods for producing coherent symbols in a single frequency network |
May. 12, 2009 |
| 7532676 |
Single sideband and quadrature multiplexed continuous phase modulation |
May. 12, 2009 |
| 7532672 |
Codecs providing multiple bit streams |
May. 12, 2009 |
| 7532638 |
Wireless terminal baseband processor high speed turbo decoding module supporting MAC header splitting |
May. 12, 2009 |
| 7529312 |
Layered modulation for terrestrial ATSC applications |
May. 5, 2009 |
| 7530010 |
Hybrid trace back apparatus and high-speed viterbi decoding system using the same |
May. 5, 2009 |
| 7526047 |
Method for encoding a message into geometrically uniform space-time trellis codes |
Apr. 28, 2009 |
| 7522678 |
Method and apparatus for a data-dependent noise predictive viterbi |
Apr. 21, 2009 |
| 7515601 |
Turbo decoding module supporting state n metric value normalization operations |
Apr. 7, 2009 |
| 7515642 |
LDPC (Low Density Parity Check) coded 128 DSQ (Double Square QAM) constellation modulation and associated labeling |
Apr. 7, 2009 |
| 7512198 |
Efficient diversity combining for wideband downlink |
Mar. 31, 2009 |
| 7512189 |
Lower complexity layered modulation signal processor |
Mar. 31, 2009 |
| 7505526 |
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion |
Mar. 17, 2009 |
| 7505522 |
Spectral shaping in multiband OFDM transmitter with clipping |
Mar. 17, 2009 |
| 7505525 |
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion |
Mar. 17, 2009 |
| 7502418 |
Method and apparatus for joint equalization and decoding of multilevel codes |
Mar. 10, 2009 |
| 7499503 |
Parallel concatenated code with soft-in soft-out interactive turbo decoder |
Mar. 3, 2009 |
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