摘要:
A transmission device capable of reducing packet receiving errors and the number of retransmissions by improving error correction coding gain without increasing the amount of resources used in transmission. The transmission device (100) that transmits each bit of coded data constituted from systematic bits and parity bits in order for each transmission unit, and performs frequency puncturing to puncture, in units of symbols, data to be punctured in which each bit has been superimposed on a plurality of frequency domain symbols. A time puncturing unit (102) extracts transmission unit data from the coded data and a frequency puncturing unit (105) performs frequency puncturing in accordance with the ratio of parity bits to systematic bits included in the data.
摘要:
A transmission device capable of reducing packet receiving errors and the number of retransmissions by improving error correction coding gain without increasing the amount of resources used in transmission. The transmission device (100) that transmits each bit of coded data constituted from systematic bits and parity bits in order for each transmission unit, and performs frequency puncturing to puncture, in units of symbols, data to be punctured in which each bit has been superimposed on a plurality of frequency domain symbols. A time puncturing unit (102) extracts transmission unit data from the coded data and a frequency puncturing unit (105) performs frequency puncturing in accordance with the ratio of parity bits to systematic bits included in the data.
摘要:
A wireless transmission apparatus able to reliably increase outage capacity according to the state of a propagation path. This apparatus is a wireless transmission apparatus (100) which transmits a plurality of streams to a wireless reception apparatus; wherein a time/space allocation determining unit (107) determines the spatial multiplex stream number based on the desired multipath number and the number of reception antenna ports of the wireless reception apparatus, said desired multipath number being calculated based on the detected multipath number, the number of reception antenna ports, and the desired error rate for the plurality of streams; a stream dividing unit (109) divides the transmission data into a plurality of streams of that spatial multiplex stream number; a transmission weight calculation unit (108) calculates a transmission weight based on the desired multipath number, spatial multiplex stream number, and a channel estimation value; and a time precoding unit (1103) and a spatial precoding unit (111) use the transmission weight to precode the plurality of streams.
摘要:
A wireless transmission apparatus able to reliably increase outage capacity according to the state of a propagation path. This apparatus is a wireless transmission apparatus (100) which transmits a plurality of streams to a wireless reception apparatus; wherein a time/space allocation determining unit (107) determines the spatial multiplex stream number based on the desired multipath number and the number of reception antenna ports of the wireless reception apparatus, said desired multipath number being calculated based on the detected multipath number, the number of reception antenna ports, and the desired error rate for the plurality of streams; a stream dividing unit (109) divides the transmission data into a plurality of streams of that spatial multiplex stream number; a transmission weight calculation unit (108) calculates a transmission weight based on the desired multipath number, spatial multiplex stream number, and a channel estimation value; and a time precoding unit (1103) and a spatial precoding unit (111) use the transmission weight to precode the plurality of streams.
摘要:
A wireless communication apparatus wherein the power consumption can be reduced. In this apparatus, a code block dividing part (101) divides a transport block, in which filler bits have been inserted, into a plurality of code blocks. A mapping control part (107) controls, based on both scheduling information, which is received from a scheduler (not shown) and indicative of physical channel resources to be used for code block transmission, and the number of filler bits which is received from the code block dividing part (101), the plurality of code blocks so that they will be mapped to the respective physical channel resources in such an order that a respective code block having a less number of filler bits will be mapped to a respective more forward physical channel resource. A mapping part (108) then maps, based on mapping information received from the mapping control part (107), data symbols, which are received from the modulating parts (106) of the respective ones of code block processing parts (102-1 to 102-C), to the physical channel resources.
摘要:
A wireless relay station apparatus for enabling a mobile station and a base station to reliably receive network coding data and to provide sufficient reception performance is provided. (1) A repeater divides data X received from a mobile station into important data and non-important data and divides data Y received from eNB into important data and non-important data. Next, (2) the repeater places the data so that important data Sx for the mobile station and important data Sy for the eNB do not overlap, XORs (exclusive ORs) them, and generates network coding data X (X) Y. (3) The repeater applies downlink propagation inverse characteristic H1−1 to important data portion Px (X) Sy for the mobile station and on the other hand, applies uplink propagation inverse characteristic H0−1 to important data portion Sx (X) Py for the eNB in the network coding data X (X) Y for transmission.
摘要:
A wireless relay station apparatus for enabling a mobile station and a base station to reliably receive network coding data and to provide sufficient reception performance is provided. (1) A repeater divides data X received from a mobile station into important data and non-important data and divides data Y received from eNB into important data and non-important data. Next, (2) the repeater places the data so that important data Sx for the mobile station and important data Sy for the eNB do not overlap, XORs (exclusive ORs) them, and generates network coding data X (X) Y. (3) The repeater applies downlink propagation inverse characteristic H1−1 to important data portion Px (X) Sy for the mobile station and on the other hand, applies uplink propagation inverse characteristic H0−1 to important data portion Sx (X) Py for the eNB in the network coding data X (X) Y for transmission.
摘要:
Overhead related to precoding (beamforming weight) information to be notified over a backhaul may be reduced while maintaining an ICI reduction effect by coordinated CoMP among a plurality of nodes. A communication apparatus of the invention includes a reception unit that receives precoding information from user equipment, a selection unit that variably controls an amount of the precoding information, which is to be notified to another communication apparatus via a backhaul, in response to positions of frequency resources, and a transmission unit that transmits the precoding information to the other communication apparatus in accordance with the amount of the precoding information controlled by the selection unit.
摘要:
Provided are a radio transmission apparatus and a radio transmission method whereby the increase of number of signaling bits can be suppressed and further the flexibility of frequency scheduling can be improved. A notified RBG calculating unit (203) that adds a predetermined offset value of “1” or “−1” to one of the start RBG number and the end RBG number of allocated RBG number information (b′i) output by a scheduling unit (201), thereby calculating notified RBG number information (bi). An RBG total number setting unit (204) calculates the total number of RBGs, which is to be notified, by adding “1” to the total number of allocated RBGs. A notified information generating unit (205) applies the notified RBG number information (bi) and the notified total number of RBGs (Nrb′) to a predetermined formula, thereby generating and transmitting, to terminals, notified information (r).
摘要:
A control information transmission apparatus which can reduce the interference power of the control signal of the terminal connected to the femtocell is provided. The control information transmission apparatus comprises an arrangement unit that arranges some or all of control signals for a terminal in an extension part among resources including a compatible part and the extension part; and a transmission unit that transmits some or all of the arranged control signals for the terminal.