摘要:
A relay supported method, system, and a RN for transmitting visible light information are provided. The method includes that UE sends information to a detected RN, and the RN processes and forwards the information from the UE to a VS. The RN is configured to process and forward the information from the UE to the VS in an uplink direction. According to the present disclosure, with adoption of visible light communication relay, visible light communication coverage may be broadened, and a visible light communication rate may be increased.
摘要:
Embodiments of the present invention disclose an optical signal compensation device, where, a nonlinear compensation module in the optical signal compensation device adopts a new nonlinear compensation algorithm to perform nonlinear compensation on an optical signal, and during the process of performing the nonlinear compensation, it is no longer required to look up a table. Technical solutions provided in the embodiments of the present invention can effectively increase the processing speed of the nonlinear compensation, thereby reducing the overall processing delay of an optical signal compensation system.
摘要:
A signal-to-interference ratio (SIR) estimator for estimating a SIR of baseband signals which are received and processed by a data demodulator to provide demodulated signals to the SIR estimator. The SIR estimator receives the demodulated symbols from the data demodulator and estimates the average signal power of the demodulated symbols as a function of a median based average power value m d and a mean based average power value m e of the demodulated symbols for each quadrant of a quadrature phase shift keying (QPSK) constellation. The function is used to determine a minimum value m between m d and m e . The SIR estimator estimates the average effective interference power of the demodulated symbols and calculates the SIR by dividing the estimated average signal power of the demodulated symbols by the estimated average effective interference power of the demodulated symbols. The SIR estimator reduces bias effects on SIR estimation.
摘要:
The present invention provides for reactivating a plurality of dormant packet data services instances. A mobile station user desires to activate at least one dormant packet data service instance. A service negotiation is initiated between the mobile station data and the wireless support network supporting the mobile station; which includes sending from the mobile station to identify all of the dormant service instances desired to be activated.
摘要:
For incremental redundancy transmission on multiple parallel channels in a MIMO system, a transmitter processes (e.g., encodes, partitions, interleaves, and modulates) each data packet for each parallel channel based on a rate selected for the parallel channel and obtains multiple symbol blocks for the packet. For each data packet, the transmitter transmits one symbol block at a time on its parallel channel until a receiver recovers the packet or all blocks have been transmitted. The receiver performs detection and obtains symbol blocks transmitted on the parallel channels. The receiver recovers the data packets transmitted on the parallel channels independently or in a designated order. The receiver processes (e.g., demodulates, deinterleaves, reassembles, and decodes) all symbol blocks obtained for each data packet and provides a decoded packet.; The receiver may estimate and cancel interference due to recovered data packets so that data packets recovered later can achieve higher SINRs.
摘要:
A method and apparatus are disclosed for performing a shortest path first network routing path determination in a data communications network based in part on information about links that are associated as shared risk groups. Micro-loops are avoided in computing shortest path first trees by considering whether links are within shared risk link group.