Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 1 - 50 out of 91

Document Document Title
WO/2009/039027A1
Control of signal compression is coordinated by selectively modifying control parameters affecting the bit rate, sample rate, dynamic range and compression operations. Selected control parameters are modified according to a control funct...  
WO/2009/016741A1
MIMO communication technology to improve estimation accuracy (MIMO decoding performance) of a transmission signal in MIMO communication. A MIMO decoding method generates a triangular matrix (R) which minimizes a scalar sum of a non-diago...  
WO/2009/012649A1
A method for transmitting multimedia broadcast multicast services is disclosed, including following steps: a Time Division Duplex system divides code channels in a time slot used to bear multimedia broadcast multicast services; the multi...  
WO/2009/015093A1
CAPACITY MAXIMIZATION FOR A UNICAST SPOT BEAM SATELLITE SYSTEM ABSTRACT Methods, systems, and apparatuses are presented for improved satellite communications. The satellite system may comprises at least one gateway, a satellite in orbit ...  
JP2006504370T6
[Subject] A pilot who can support various functions suitable for use by a MIMO system is provided. [Means for Solution] A pilot various type contains a sign pilot, a MIMO pilot, a ステアド reference or a ステアド pilot, and a sub...  
JP2008544603A
The receiver concerning the present invention is using the knowledge about a symbol spread code, and reduces the interference in the receiving symbol for [resulting from an interference symbol] communication. Moreover, two or more correl...  
JP4172810B2  
JP4170789B2  
JP2007522752A5  
JP2007522752T5  
JPWO2006126648A
The determination part (116) which computes the correlation value between the channel characteristics of each resource block in STBC (Space Time Block Code), and decides the mutually related highest combination pattern, The connection di...  
JPWO2006126655A
The radio sending set, radio receiving set, and wireless transmission method which improve the detecting accuracy of the stream in D*TxAA are indicated. The propagation environment of the 1st and 2nd MIMO channel beam (1831, 1832) is emb...  
JPWO2006123418A
In a communications system which communicates by changing the 1st multi-antenna transmitting control that transmits a multi-stream, and the 2nd multi-antenna transmitting control that performs single stream transmission, If distance betw...  
JPWO2006118123A
Radio communication equipment which can reproduce propagation way information with sufficient accuracy in the transmitting side is indicated without increasing the amount of feedback information. In this device, in a channel estimation p...  
JPWO2006118081A
The link Adaptation method etc. which can reduce the amount of feedback information are indicated. In a receiving set (100), based on a channel procession, stream ratio r which is a ratio of capacity C and the receiving quality of each s...  
JPWO2006106862A
High channel capacity is realized also in environment where space correlation is high, and a wireless communication method, a radio communications system, and radio communication equipment which can improve the receiving characteristic a...  
JPWO2006106770A
The 1st normalization means (12) is the 1st numerals stream s.1The 2nd numerals stream s2Normalizing, the 1st diffusion means (13) diffuses the output of the 1st normalization means (12). A STTD encoding means (14) is the 1st numerals st...  
JPWO2006106693A
The channel parameter generation method which realizes restriction feedback in a MIMO system is provided. This method generates the channel parameter of the MIMO channel fed back to a radio sending set from a radio receiving set. This me...  
JPWO2006104104A
Flexible control according to change of propagation environment is enabled, and a MIMO sending set which reduces the number of times of resending more is indicated. A buffer (104) memorizes a transmission bit after interleave temporarily...  
JPWO2006103758A
In a radio communications system which transmits a signal towards a plurality of moving terminals using a multi-antenna, Receiving quality in a moving terminal of a signal transmitted from each antenna of the transmitting side is measure...  
JPWO2006104142A
A MIMO decoder which enables change of a search range of a transmitted signal vector according to change of a channel procession, A generalized-inverse-matrix calculation part which calculates a generalized inverse matrix of a ムーワ ...  
JPWO2006101209A
A MIMO sending set which can be made highly efficient while being able to make it low power consumption by taking into consideration the influence by change of communication distance. With this device, it is a low-power-consumption desig...  
JPWO2006101180A
a procession produced by multiplying a step (S401) which a base station acquires channel information on two or more user terminals, and it changes into a channel procession, and a channel procession and a conversion procession turns into...  
JPWO2006101213A
In a MIMO system, it is using HARQ art, compacting feedback information and reducing the amount of information to transmit, The MIMO communication apparatus which makes it possible to improve the efficiency of data communications, and pe...  
JPWO2006100767A
A plurality of antenna 118*1*118*M and phasing correlation measurement part 111 which measures phasing correlation of a received signal between each antenna, While extracting feedback information from a received signal with phasing corre...  
JPWO2006098147A
In radio communication equipment of many input systems, a frequency response of a received signal is presumed by Fourier transform, The impulse response concerned is divided into a channel impulse response of each signal using a Window f...  
JPWO2006098387A
The present invention indicates a transmission bit and a transmitting power distribution method which can reduce the amount of processing operations in a multi-antenna input multi-antenna output (MIMO) radio communications system. A step...  
JPWO2006098111A
Although beamforming is the very outstanding method, when a plurality of users exist especially, characteristic degradation of the circuit concerned by a shortage of money of a radio resource of a reverse circuit by feedback of informati...  
JPWO2006098008A
It is not concerned with the size of change of the propagation way characteristic, but radio communication equipment with high quality accuracy is provided. Radio communication equipment can increase a ダイバシチ profit by presuming...  
JPWO2006095904A
The present invention indicates the resending method which can improve the throughput of a system, a radio receiving set, and a multi-antenna communications system. In this method, it is detected whether there needs to be an error the re...  
JPWO2006095877A
A MIMO sending set which can make the throughput of a system able to increase and can raise the efficiency of the whole data communications while being able to raise the reliability of system transmission by rearranging the data to resen...  
JPWO2006093093A
The resending control method and radio communication equipment which improve the efficiency of resending control and further improve a system throughput. In this radio communication equipment (100), an error generating factor management ...  
JPWO2006082637A
When determining whether add a pilot symbol other than a basic pilot symbol to a frame based on a propagation way state and adding in the transmitting side, A control symbol including information about an additional pilot symbol is gener...  
JPWO2006080360A
A communication apparatus which can reduce the interference at the time of being able to reduce transmission rate demand signals, being able to transmit and transmitting a transmission rate demand signal, and power consumption in a MIMO ...  
JPWO2006080317A
A sending set which can prevent retransmission information or the redundant bit of coding increasing in a MIMO communication method, and can improve a throughput. In this device, a coding part (130) is put in block to the data transmitte...  
JPWO2006077729A
A sending set, a receiving set, and a wireless communication method which reduce a rate of a redundant ingredient to a signal more, and improve transmission efficiency controlling intersymbol interference. This sending set (100) transmit...  
JPWO2006077842A
Realizable radio communication equipment is simultaneously provided for the depressing effect of interference between base stations, and the flattery nature to a mobile station with high movement speed. A movement speed estimating part p...  
JPWO2006075661A
The radio communications system which can realize adaptation STTD (Space*time Transmit Diversity) is indicated. SINR (Signal to Interference and Noise Ratio) of each substream [in / on this system and / by channel estimation / in a recei...  
JPWO2006075585A
A transmitting power control method and a radio sending set of a multi-antenna system which perform adaptation abnormal conditions are indicated. In this method, frequency efficiency of a transmitting antenna in which a bit error rate is...  
JPWO2006075577A
A multi-antenna correspondence procedure which can further raise resending performance in transmission of a multi-antenna is provided. In this method, receiving quality of a substream which requires resending is acquired first (Step 401)...  
JPWO2006075732A
Also in the situation of being easy to receive interference, a propagation way is presumed with sufficient accuracy and it restores to an information signal correctly. error correcting code part 1, S/P conversion part 2, mapping part 3, ...  
JPWO2006075733A
The accuracy of propagation way presumption at the time of receiving the signal from a plurality of antennas is raised. A base station side sending set is with preamble A generation part 010 and preamble B generation part 011, Phase rota...  
JPWO2006070465A
Suppose that slots 3 and 4 are constituted and transmitted to a frame from slots 1 and 2 and antenna 2 from antenna 1 in the system which communicates using a plurality of antennas. In a receiving side, the existence of an error is inspe...  
JPWO2006070466A
A control channel transmission method which raises a total throughput without reducing the transmission efficiency of a data channel, The step which chooses one control channel format from several control channel formats from which the a...  
JPWO2006070478A
A sending set (1) forms a plurality of transmitting beam 1*M using a plurality of antennas (15*1*15*4). Good transmitting beams 2 and 3 of receiving quality in which correlation is low are chosen. Data stream 1 is transmitted using trans...  
JPWO2006070750A
A radio sending set etc. which improve the rate characteristic of a receiving error are indicated. In this device, a data modulation part (121) modulates a data signal, and obtains an abnormal-conditions symbol. Q reversal part (125) is ...  
JPWO2006070756A
A radio receiving set from which an interference signal is efficiently removable in multicareer communication. In a mobile station (200) provided with this radio receiving set, it is a selecting part (205), A plurality of same symbols ar...  
JPWO2006064857A
A sending set which can provide the resending art which can raise the throughput of a system while being able to improve the certainty of the data communications of a MIMO system, and is adapted for multi-antenna transmission. With this ...  
JPWO2006059767A
The method of carrying out blind separation of the mixed signal is related with at least one source of a signal, The filter which becomes settled uniquely to the source of a signal concerned for every source of a signal is defined, and t...  
JPWO2006057334A
Multirate radio communication equipment which can decrease in number system load by the degree of complexity being low and performing dynamic numerals distribution to the numerals 混み合い problem which arises when a system supports ...  

Matches 1 - 50 out of 91