摘要:
According to one embodiment, a module comprises a connector into which a first plug and a second plug are insertable. The connector includes a housing and a terminal portion provided in the housing. The housing includes an insertion opening part which exposes the terminal portion outside, a back part positioned at an end part opposite to the insertion opening part in the housing, and a side part provided between the insertion opening part and the back part and configured to oppose to the plug when the plug is inserted into the connector. The side part includes an inclined part which continues to the insertion opening part and is inclined such that a distance between the inclined part and the plug increases in a direction from the back part toward the insertion opening part to form a gap between the inclined part and the plug.
摘要:
According to one embodiment, a connector into which a first plug and a second plug are insertable. The connector includes a housing and a terminal portion provided in the housing. The housing includes an insertion opening part which exposes the terminal portion outside, a back part positioned at an end part opposite to the insertion opening part in the housing, and a side part provided between the insertion opening part and the back part and configured to oppose to the plug when the plug is inserted into the connector. The side part includes an inclined part which continues to the insertion opening part and is inclined such that a distance between the inclined part and the plug increases in a direction from the back part toward the insertion opening part to form a gap between the inclined part and the plug.
摘要:
Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
摘要:
Channel fluctuation values on propagation paths of modulated signals transmitted from a plurality of antennas are estimated, an eigenvalue of a channel fluctuation matrix created with the above-mentioned channel fluctuation values as elements is found in order to relate antenna received signals to modulated signals, and using that eigenvalue, receiving antenna selection, combining of modulated signals, and weighting processing on soft decision decoded values, are performed, and modulated signals are demodulated. By this means, it is possible to perform demodulation processing based on the effective reception power of a modulated signal (that is to say, the essential reception power, of the reception power obtained by a receiving apparatus, that can be effectively used when demodulating a modulated signal), enabling the precision of demodulation of modulated signals to be improved.
摘要:
A multi-antenna transmitting apparatus wherein a relatively simple selection procedure can be used to reconcile the data transmission rate and the received data quality. When a transport signal, which is required to have a higher quality than other signals, is to be transmitted, a vector multiplexing part (105) reduces the number of transport beams (i.e., reduces the number of unique paths used for transmission), and further gives a higher priority to a unique vector belonging to a large unique value and uses that unique vector to vector multiplex the transport signal, thereby forming a transport beam (i.e., gives a higher priority to a signal, which is required to have a high quality, and transmits that signal by use of a unique path having a large path gain).
摘要:
A MIMO-OFDM transmission apparatus is provided which allows high accuracy estimation of frequency offset, high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection.Pilot symbol mapping (1111) is provided for forming pilot carriers by assigning orthogonal sequences to corresponding subcarriers among OFDM signals which are transmitted at the same time from respective antennas in the time domain.Even when pilot symbols are multiplexed among a plurality of channels (antennas), this allows frequency offset/phase noise to be estimated with high accuracy.