摘要:
A method and related system of transmission channel detection condition in a wireless communication system are disclosed. The method includes receiving a symbol, performing a channel estimation operation to generate a channel estimation result according to the symbol, performing a cross correlation operation on the channel estimation result and an initial channel estimation result to generate an operation result, and determining whether the condition of the transmission channel have changed or not.
摘要:
A method and related system of transmission channel detection condition in a wireless communication system are disclosed. The method includes receiving a symbol, performing a channel estimation operation to generate a channel estimation result according to the symbol, performing a cross correlation operation on the channel estimation result and an initial channel estimation result to generate an operation result, and determining whether the condition of the transmission channel have changed or not.
摘要:
The present invention provides a method for simplifying a probabilistic rate adaptation procedure in a wireless communication system, which comprises calculating a conditional probability density function of SNR of a transmitted signal by the probabilistic rate adaptation procedure, to generate an SNR estimation result, taking logarithm on the SNR estimation result to generate a logarithm result, and partitioning SNR values into a plurality of regions according to the logarithm result, to generate a discrete function from the SNR estimation result.
摘要:
The present invention provides a method for enhancing accuracy of rate adaptation in a transmitter of a wireless communication system, which comprises setting a plurality of scores indicating reliabilities of a plurality of MCSs of the wireless communication system during rate adaption procedures of the plurality of MCSs, and adjusting the plurality of scores according to a plurality of response messages indicating receiving statuses of a plurality of transmitted packets.
摘要:
The present invention discloses a multi-user (MU) downlink and downlink transmission method for a communication system. The communication system includes an access point (AP) and a plurality of stations. The MU transmission method includes steps of the AP deciding a first group of stations in a first scheduling period based on a channel condition, and the AP and the first group of stations performing simultaneously transmission during a MU media access control period.
摘要:
A method for generating training sequences in a transmitter having a plurality of transmitting antennas, includes dividing each of a plurality of symbols into a plurality of sub-symbols with a quantity equal to a quantity of the plurality of transmitting antennas, sequentially transforming a plurality of sub-symbols corresponding to same positions in each of the plurality of symbols, to generate a plurality of training data, and generating a plurality of training sequences of independent frequencies according to the plurality of training data, for forming parts of packets emitted by the plurality of transmitting antennas.
摘要:
A method of reducing a signal peak to average power ratio (PAPR) for a transmission channel in a wireless communication system is disclosed. The transmission channel is divided into a plurality of channel segments, and the method includes calculating PAPRs corresponding to the plurality of channel segments by a plurality of phase rotation vectors; selecting a plurality of specified phase rotation vectors from the plurality of phase rotation vectors according to the calculated PAPRs; and using one of the plurality of specified phase rotation vectors to rotate a phase of a signal to be transmitted.
摘要:
The present invention discloses a multi-user (MU) transmission method for a multiple input multiple output (MIMO) transmission system comprising a first station and a plurality of second stations. The MU transmission method includes the step of the first station performing simultaneous transmission to a first group of stations of the plurality of second stations in a first transmission interval.
摘要:
A method of arranging a packet in a wireless communication system includes a preamble sequence and a data sequence. The preamble sequence includes a legacy training field (L-TF), a legacy signal field (L-SIG), a very high throughput signal field (VHT-SIG), a very high throughput short training field (VHT-STF) and at least one very high throughput long training field (VHT-LTF). The method includes generating a first VHT-SIG field and a second VHT-SIG field according to the VHT-SIG field; and arranging the L-TF field, the L-SIG field, the first VHT-SIG field, the VHT-STF field, one of the at least one VHT-LTF fields, the second VHT-SIG field and the rest of the at least one VHT-LTF fields in a predetermined sequence.
摘要:
A method of generating preamble sequence is disclosed. A channel used by a wireless device may be divided into four sub-channels, and the method includes forming a preamble sequence of a first sub-channel, making three replicas of the preamble sequence of the first sub-channel, each replica with a phase rotation of a first angle, a second angle, and a third angle respectively, for forming each preamble sequence of a second sub-channel, a third sub-channel, and a fourth sub-channel, and arranging the preamble sequences of the first, the second, the third, and the fourth sub-channels to form a preamble sequence of the channel.