摘要:
A communications system is described in which user devices communicate with an associated base station. The user devices employ frequency hopping techniques to provide frequency diversity in their communications with the base station. Techniques are described for reducing collisions between the communications from the different user devices and for the efficient signalling of data defining the frequency hopping sequence to use. The inventions are particularly suitable for use in the uplink of the E-UTRA communications scheme.
摘要:
최적해밍상관값을 가지고 Lempel-Greenberger경계와 Peng-Fan경계를 만족하는 주파수도약수열을 발생시키는 인터리빙을 이용한 주파수도약수열 발생방법, 이를 수행하기 위한 주파수도약수열 발생기, 코드분할 다중접속장치 및 주파수도약수열 발생에 이용되는 클락속도의 제어방법이 기록된 기록매체가 개시되어 있다. 주파수도약수열 발생기를 구성하는 의사불규칙수열 발생기중 하나를 선택하는 클럭속도와 선택된 의사불규칙수열 발생기에서 수열이 발생되는 클럭속도를 조절하여 상기 두 경계값을 만족하는 파라미터를 가지는 새로운 주파수도약수열을 발생시킨다. 따라서, 다중접속간섭(MAI, Multiple Access Interference)을 줄일 수 있고 수신단에서 동기획득이 용이해지며 데이터전송효율이 향상된다.
摘要:
A communications system is described in which user devices communicate with an associated base station. The user devices employ frequency hopping techniques to provide frequency diversity in their communications with the base station. Techniques are described for reducing collisions between the communications from the different user devices and for the efficient signalling of data defining the frequency hopping sequence to use. The inventions are particularly suitable for use in the uplink of the E-UTRA communications scheme.
摘要:
PURPOSE: A frequency hopping progression generating method using an interleaving, a frequency hopping progression generator, a cod division multiple access device and recording medium recording a method controlling a clock speed generating time and the clock speed used in a frequency hopping generation are provided to reduce a multi access speed and improve data transmission efficiency by facilitating a synchronization obtaining. CONSTITUTION: A plurality of pseudo-random sequence generators is provided by the same cycle and the same clock speed. A first clock speed, a first clock speed maintaining time, a second clock speed, and a second clock speed maintaining time is received(610). The first clock speed expresses a speed selecting among a plurality of pseudo-random sequence generators. The second clock speed expresses pseudo-random sequence generating speed of the plurality of pseudo-random sequence generators. The device controls the generator to generate frequency hopping sequence of a long cycle(620).
摘要:
A communications system is described in which user devices communicate with an associated base station. The user devices employ frequency hopping techniques to provide frequency diversity in their communications with the base station. Techniques are described for reducing collisions between the communications from the different user devices and for the efficient signalling of data defining the frequency hopping sequence to use. The inventions are particularly suitable for use in the uplink of the E-UTRA communications scheme.