The English to Spanish translation for the expression, "we rake leaves" is nos deja rastro. Anything else we can translate?
Code division multiple access
Code division multiple access (CDMA) is a channel access method used by various radio communication technologies.
CDMA is an example of multiple access, which is where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this to be achieved without undue interference between the users CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code).
A rake receiver is a radio receiver designed to counter the effects of multipath fading. It does this by using several "sub-receivers" called fingers, that is, several correlators each assigned to a different multipath component. Each finger independently decodes a single multipath component; at a later stage the contribution of all fingers are combined in order to make the most use of the different transmission characteristics of each transmission path. This could very well result in higher signal-to-noise ratio (or 0/NbE) in a multipath environment than in a "clean" environment.
The multipath channel through which a radio wave transmits can be viewed as transmitting the original (line of sight) wave pulse through a number of multipath components. Multipath components are delayed copies of the original transmitted wave traveling through a different echo path, each with a different magnitude and time-of-arrival at the receiver. Since each component contains the original information, if the magnitude and time-of-arrival (phase) of each component is computed at the receiver (through a process called channel estimation), then all the components can be added coherently to improve the information reliability.
El Rastro de Madrid or simply el Rastro is the most popular open air flea market in Madrid (Spain). It is held every Sunday and public holiday during the year and is located along Plaza de Cascorro and Ribera de Curtidores, between Calle Embajadores and the Ronda de Toledo (just south of La Latina metro station).
A great variety of products (new and used) can be found at el Rastro. A number of antique shops in the local area are also open on Sunday.