walsh codes造句

• This code is also referred to as a Walsh code.
• BTSs transmit a " sync channel " spread with Walsh code 32.
• Other forward channels, selected by their Walsh code, carry data from the network to the mobiles.
• The conventional channelization code, Walsh code does not have enough available bits to cope with maximal use.
• In the case of IS-95 64 bit Walsh codes are used to encode the signal to separate different users.
• Since each of the 64 Walsh codes are orthogonal to one another, the signals are channelized into 64 orthogonal signals.
• BTSs transmit at least one, and as many as seven, " paging channel " s starting with Walsh code 1.
• In code division multiple access ( CDMA ) communication, the Hadamard code is referred to as Walsh Code, and is used to define individual signal.
• Hence the name " Hadamard code " is not undisputed and sometimes the code is called " Walsh code ", honoring the American mathematician Joseph Leonard Walsh.
• Therefore, the quasi-orthogonal function ( QOF ), which can process optimal cross-correlation with Walsh code has been used as a method to get around the limitations of the Walsh Codes.
• Therefore, the quasi-orthogonal function ( QOF ), which can process optimal cross-correlation with Walsh code has been used as a method to get around the limitations of the Walsh Codes.
• Like the forward link, the chip rate is 1, 228, 800 per second and signals are spread with Walsh codes and the pseudo-random noise code, which is also known as a Short Code.
• To enhance the overall capacity in such scenarios, alternative sets of orthogonal functions called the quasi-orthogonal functions ( QOF ), which possess optimal minimax cross correlation with Walsh code sets of variable length, have been incorporated in IS-2000.
• Each signal is spread with a Walsh code of length 64 and a pseudo-random noise code ( PN code ) of length { 2 } ^ { 15 }, yielding a PN roll-over period of \ frac { 80 } { 3 } ms.
• With CDMA, signals that are not correlated with the channel of interest ( such as other PN offsets from adjacent cellular base stations ) appear as noise, and signals carried on other Walsh codes ( that are properly time aligned ) are essentially removed in the de-spreading process.