| 摘要 |
PROBLEM TO BE SOLVED: To improve the bit error rate by adopting weighted combining in response to a reception-desired signal power to interference wave power ratio(SIR) even when the SIR is high. SOLUTION: Correlation values C1, C2 between specific pattern reception outputs S1, S2 and specific patterns are found (20), square sums K1, K2 of in-phase components and quadrate components of the C1, C2 are found, respectively (22), and an SIR estimate section 23 estimate the SIR based on SIR1(t)=k1(t)/(1-k1(t)) and on SIR2(t)=k2(t)/(1-k2(t)) in the case of synchronization detection and based on SIR1(t)=√k1(t)/(1-√k1(t)) and on SIR2(t)=√k2(t)/(1-√k2(t)) in the case of delay detection respectively and estimated values of the SIR estimate section 23 are used for weight coefficientsω1,ω2 for demodulation outputs S1, S2.
|
