摘要:
An OFDM reception device receives an OFDM symbol that includes a signal for a useful symbol duration generated based on transmission information and a signal for a guard interval duration generated based on the signal for the useful symbol duration. The OFDM reception device includes a first orthogonal transformation unit configured to perform an orthogonal transformation on the signal for the useful symbol duration, a second orthogonal transformation unit configured to perform an orthogonal transformation on the signal for the guard interval duration, and a decoding unit configured to decode the OFDM symbol in accordance with results of the orthogonal transformation by the first orthogonal transformation unit and results of the orthogonal transformation by the second orthogonal transformation unit.
摘要:
An OFDM reception device A comprises: a first orthogonal transformation unit A1 that orthogonally transforms a signal for a useful symbol duration included in an OFDM signal and outputs a resulting orthogonally transformed signal; a second orthogonal transformation unit A2 that orthogonally transforms a signal for a guard interval duration included in the OFDM signal and outputs a resulting orthogonally transformed signal; a detection unit A3 that detects a wide band carrier frequency error amount according to the signal output from the first orthogonal transformation unit A1 and the signal output from the second orthogonal transformation unit A2; and a correction unit that corrects a wide band carrier frequency shift of the OFDM symbol according to the wide band carrier frequency error amount detected by the detection unit A3.
摘要:
In order to implement both a physical later pipe (PLP) structure and a plurality of receiver classes, a transmitting apparatus includes: a signaling information generation unit which generates signaling information including a transmission parameter for each of PLPs; a PLP processing group which performs processing based on the transmission parameter for each of the PLPs; and a transmitting unit which transmits data including the generated signaling information and PLP data for each of the PLPs. The PLP data is received by a receiving apparatus that is indicated by a flag of the PLP and is not received by another receiving apparatus, the receiving apparatuses being included in a plurality of receiving apparatuses classified under a plurality of states. The generated signaling information includes, as the transmission parameter for each of the PLPs, the flag of the PLP.
摘要:
An orthogonal transform subunit 14 separates a reception signal into carriers on a per-symbol basis. In a channel characteristics estimation subunit 15, (i) an SP channel characteristics estimation part 20 calculates channel characteristics at carriers to which SPs are allocated, by using signals output from the orthogonal transform subunit 14, (ii) a symbol direction interpolation part 30 interpolates, in the symbol (time) direction, signals output from the SP channel characteristics estimation part 20, (iii) a TMCC channel characteristics estimation part 40 calculates channel characteristics at carriers to which TMCCs are allocated, by using signals output from the orthogonal transfer subunit 14, and (iv) an adaptive interpolation part 50 calculates filter coefficients by using signals output from the symbol direction interpolation part 30 and the TMCC channel characteristics estimation part 40, and adaptively interpolates signals output from the symbol direction interpolation part 30 by using values of the calculated filter coefficients.
摘要:
An inter-carrier interface removal device can improve estimation accuracy of inter-carrier interference caused by Doppler shift in a received multi-carrier signal moving at a high speed, and a reception characteristic of the multi-carrier signal after removing the inter-carrier interference. The inter-carrier interference removal device includes: a channel estimation unit (101) estimating a channel frequency characteristic according to a carrier signal; an equalization unit (102) equalizing the carrier signal with the channel frequency characteristic and outputs tentative carrier data; a reliability value calculation unit (103) calculating a reliability value according to the channel frequency characteristic; a weighting unit (104) weighting the tentative carrier data with the reliability value; and an ICI component estimation unit (106) estimating an ICI component according to the weighted tentative carrier data and the estimated channel frequency characteristic; and an ICI removal calculation unit (107) removing the ICI component from the carrier signal.
摘要:
An automobile fuel container material and container has good workability, corrosion resistance of internal and external surfaces and weldability. Excellent environmental adaptability arises from the material being free from the elution of harmful components such as lead and chromium(VI). The automobile fuel container material includes a steel sheet, 5 to 80 g/m2 zinc plating as a first layer on at least one side of the surface of the steel sheet, 10 g/m2 nickel plating as a second layer, and not more than 5 g/m2 of a post-treatment layer. The post-treatment layer forms by coating partially reduced chromic acid and a reducing organic compound or can be an electrolytic chromate film as a lower layer and a resin as an upper layer.
摘要翻译:汽车燃料容器材料和容器具有良好的可加工性,内外表面的耐腐蚀性和可焊性。 优良的环境适应性源于不含有害成分如铅和铬(VI)的洗脱物质。 汽车燃料容器材料包括钢板,在钢板表面的至少一侧上作为第一层的5-80g / m 2镀锌层,第二层为10g / m 2的镍镀层 层,不超过5g / m 2的后处理层。 后处理层通过涂覆部分还原的铬酸和还原性有机化合物形成,或者可以是作为下层的电解铬酸盐膜和作为上层的树脂。